Yattee, an alternative to NewPipe, has been available on the AppStore for over a year. Well before there was any pressure from the DMA.
https://apps.apple.com/us/app/yattee/id1595136629
> Apple keeps rejecting macOS version of Yattee for several unrelated and random reasons. As I believe the App Store approval process is random and getting approval depends mostly on whether the reviewer has had a nice day, I keep resubmitting macOS versions with every update so maybe we will get lucky one day.