this has nothing to do with blame.
this has to do with meeting customer demands for popular fish.
I don't like parrots as much as you do, but I don't fault the LFS's for trying to stay in business.
Sure it does. You don't agree with the fish, but you still buy and sell them because they want them.
In essence, I don't agree with the fish, don't think they should be sold and promoted, but I will buy some and sell them to you so I can make a buck and stay in business. Your purchase of them contributes to the continued promotion and production of them. Get real.