I think one direction this article could go in is to question why it is that "big box" chain pet stores like Petco, Petsmart, etc. primarily sell this sort of decor.
Since these are chains, I imagine the one in my town is quite similar to most - correct me someone, if I'm wrong. None of the displays have live plants - I understand this makes it difficult to catch the fish and the live plants can't be moved out of the way the way a castle decoration could. Most of the live plants they do sell don't look all that great. At Petco they are in a confusing jumble and at Petsmart they are nicely separated, labeled, priced etc. but most of them don't look all that great. The fried anubias are under the same metal halides that anacharis and hornwort are under, the only two plants which reliably look good.
When I had an LFS available to me in town (there used to be three, two of them closed, now there is only one teensy tiny outfit remaining which deals exclusively with SW, so I don't go there since I can't use anything but the food and filter media) I never saw that they had that super tacky decor, like the clown puke gravel. Walmart, a place where many people go to get their fish supplies, has almost exclusively really tacky stuff - a little bit of natural gravel, and some all green plastic plants, but that's as far as that goes. Everything else is all neon glow in the dark coral, skulls and "no fishing" signs.
Petco and Petsmart have some natural looking driftwood replicas, and I don't really find the "city of Atlantis" theme or shipwreck stuff to be that tacky. But I do visually take offense to the orange plastic plants, shiny marbles, and such.
Fish like to blend into their environment, so I *think* they would rather have realistic colored artificial plants. Orange and neon blue plastic plants are better than nothing, I guess, but green and dark green are probably best. All white gravel (very reflective) or gravel that is neon colored most likely has similar issues, unless you let the algae build up which will subdue the colors a bit.
Here's one issue with the painted decor...well, two issues really.
1. They get dirty. People who buy these sorts of decor want to keep them looking "pretty"...I mean, who would like a decoration like this to get green algae on it?
http://ecx.images-amazon.com/images/I/61ira6OnbLL._SL500_AA280_.jpg
So these are the sort of decorations people will scrub, and we all know scrubbing down aquariums is bad...
2. The paint comes off. Either their "sucker fish/cleaner fish/bottom feeder" rasps it off, or it comes off with the scrubbing, or it just eventually comes off period, it's going to become gray and discolored eventually.
Natural rocks and driftwood actually tend to look good with algae on them. The algae accentuates them. They last a lot longer, and they are often times free

Especially the rocks...(btw as a Floridian, I am extremely jealous of you all who can take a casual walk and come across granite, slate etc. since here in Florida all we have is limestone!)
So to sum it up, here are my two points, that I am bringing up here...sorry, I've wandered around all over the place
Number 1: Do we really want this sort of decor? Or is it just pushed on us because this is what we see in the chain stores, so this is what we think aquariums are supposed to look like? In this case, I think there is a point to be made against them - they do not encourage a "seasoned" aquarium. They are shiny and new at first, they get 'dirty' so people clean them up, and while they are at it they go ahead and rinse the lime green gravel because it's starting to get algae on it - boom. Cloudy water, new tank syndrome all over again.
Number 2: I certainly don't mean to offend anyone, but these sorts of decorations are really mostly for the newbies. Like excuzzeme said, people who didn't know anything about aquariums bought them for him, because they thought that's what aquariums were supposed to have in them.
Do the stores that sell this stuff purposefully keep mostly "newbie" items prominently stocked, but don't pay much attention to the live plants, ferts, T5 bulbs, and other "expert" supplies? This is, IMO, why many seasoned fishkeepers mostly buy online.
I know that in my Petsmart, the live plant stuff is still on the bottom shelf. "First Layer" laterite is on the lowest of the low shelf. "Algae fix" is at eye level.
If I were to rewrite your article, D, I would focus on the marketing aspect. We all know how cheaply aquariums can be to run. Buying live plants which propagate themselves (so that eventually, if we do things right, selling our trims and clippings can pay for the monthly maintenance of ferts and CO2) costs a lot less than buying a new burping clam every time the old one starts looking crummy.
Pet stores with fish departments emphasize the "disposable" aspect of aquariums. Betta stuff takes top billing here. I mean, who doesn't know that shiny glass marbles are useless for biological filtration...in a filterless bowl, some porous gravel or ceramic substrate could actually be useful.
Speaking of disposable, I bought a fish at Walmart the other day (yes...it's in QT

) and the attendant let me know that there is a 90 day return policy. No water test required. If the fish dies I can get a new one, one of equal or lesser value, or get my money back.
I'm sure this policy is pleasing to the customers...but what does it encourage? Responsible aquariums, or disposable fish tanks with throwaway fish?
Just some thoughts...I hope this doesn't offend anyone. It certainly isn't my intent. For the record, I still have plastic plants and I am very fond of some artificial decor - particularly the homemade, lovingly crafted pottery at
http://www.rosenthalpottery.com/