I agree that sometimes a pet owner has to do what they think is best for the animal regardless of "accepted practices". I think I made a bad decision over 3 years ago and still regret it. I raised a maroon clown for 2 1/2 years until he started becoming violent towards my other fish. I didn't know about canreef at the time and didn't know any fellow reefers so I took him to a pet store to be rehomed. There is a lot of beginners who know nothing about maroons and their behaviors and I am afraid it went to one of these people and ended up down the toilet. In retrospect I only had room for a small tank but wish I had set one up just for him even though a larger tank than I could set for him is recommended. I worry that the fate of a smaller tank is better than what may have happened to him.
I realize that tangs and clowns have different swimming needs but that's my story.