I did a build from their repo and pushed it to the Apple TV, just to try out the rewrite changes. It's considerably improved, and plenty nice for my purposes. I didn't feel like I had to, though. I'll delete it and use the app store version when they cut a release.

I think a lot of people are doing stuff that's well beyond what I use it for. I just have my blurays and dvds on there, so it's possible I don't know I'm missing some important stuff that other people need.

Infuse is a nice app but note that it does not use the media server's transcoding service, so it can work poorly trying to stream remotely, while Jellyfin's transcoding-aware web client works better. The Jellyfin app for Apple TV was pretty unusable last time I tried it, though.

This sort of underscores the ancestor's complaint: It's not exactly dead simple to set up and understand, the community recommends third-party apps that have only partial support, etc.

I held off buying an apple TV mainly cause I don't want to purchase Infuse for DV/HDR/Atmos content. Is there a decent client otherwise?

I really like Infuse, I use it with Jellyfin to stream to my Apple TV. But there is one thing that I have repeatedly been irritated by, and it is that it cannot search by tags, nor can it search for words in the description of movies.