I didn't keep fish before having internet, but my mom keeps fish and doesn't know the first thing about computers. I advise her on some things she does, but not everything because I don't want her dreading my visits!
I don't think it makes people bad fishkeepers for not doing everything perfectly. Think of it this way... even with internet and all the information available now that wasn't even known years ago, most people who own aquariums don't even know the importance of researching it, much less do they do everything right. If ONLY knowledgable people (who have researched and do everything by the books) bought fish, most of the fish you see in stores would never be bought and die right there cramped in too small tanks. Not everyone took biology, has a college education, or has a clue about the biology involved in the aquarium. All they know is fish go in water. They aren't ignorant about the topic out of malice or cruelty, and not to get off topic, but this is something that people should keep in mind when responding to newbies on this forum or customers at their FS jobs. Not everyone is educated about everything, and if they were, the world wouldn't run well.