To be fair, one of the apps mentioned, [Re]Vanced, is literally just the stock app with extra features patched in and the premium features enabled for free (like no ads and downloads). It makes sense that it would be more user friendly. Allowing that modified version doesn’t get them any revenue though while still costing them to host and serve the content to those users.

At least with NewPipe it supports multiple sites and is its own app with their own code and UI.