The whole App Store counts as one gatekeeper, so there won’t be a separation between an iOS, iPadOS, macOS and tvOS App Store. Therefore, you’ll get those changes for the Apple TV as well.

Yes, there is a modded version which works with your own API key. https://balackburn.github.io/Apollo/

I can‘t wait for Delta Emulator. I had to deinstall it because of the three app limit and before Reddit made those stupid API changes I had uYouPlus and Delta. Now I have uYouPlus and Apollo.