Wild discus in a tank

I'm not keen on the concept of having discus that have been caught from the wild and then placed in a tank - for me, it's just not right. I'm fine with captive bred fish - no problems there but snatched from the wild? Seems a very harsh transformation. Anyway, I stumbled across this clip which shows wild discus, but I appreciate the lengths the hobbyist has gone to in order to replicate a natural environment for them. It's a little cramped in there but fascinating to watch.

What are your thoughts about wild discus in aquariums?