What would you consider circus like conditions? Is it the exhibits, the shows, or the husbandry in general?
I think the welfare difference of captive orcas vs bottlenose dolphins is incredibly different, as we've seen bottlenose dolphins live longer and thrive, but orcas aren't as easy. This is not me saying they can't be held, but they aren't going to exist much longer in North America, with the bottlenecked population I mentioned, and SeaWorld's ban on breeding. Bottlenose Dolphins are going to last a long time, with the advancements in medicine.
I disagree with the sentiment that people don't go to shows to care about animals, as there is an entire community of people going to shows because, well, they care about the animals. Especially nowadays, as the show is not theatrical anymore, besides some music and a few behaviors. But most of the theatrical behaviors have been removed, and there's even an entire husbandry and care segment of the show (they call them presentations now).
I think it's really just up to personal opinion. For me, I'm not against animal shows as a concept. I think there is a difference from a circus that you're pointing and laughing at an animal doing demeaning things vs. a zoological facility with cetaceans where you're seeing what these animals can really do. Again, that is just a personal opinion thing.
As for my interest, I didn’t mean to suggest that engagement alone justifies captivity, I was pointing out that these facilities can give meaningful connections between people and wildlife, which can lead to broader support for conservation. This can be accomplished with any captive animal, but I have heard many people say it was specifically the cetaceans, which was the same as in my case.
For animals being taken out of the wild, that's only really in Asia, Russia pretty much stopped that. I think it is unexcusable though, and really is a terrible thing, and I don't mean to say otherwise.