Airplay doesn't suck. It works exactly as it should right across all Apple products and has for years. It is old now and should either be updated or replaced with new tech.
I do
I do understand it. If you have Apple Music setup on Apple TV simply select it from your iphone. Then your iphone is in fact a remote. In my case I can stream to Dietpi 44/16 or Apple 4K 48/24 in the latter case the phone is acting as a remote for Apple Music on Apple TV. The disadvantage...
You're not actually streaming through AirPlay. Hooked up and used that way the audio is via cable from the AppleTV to the DAC. Your phone is a remote as such. It won't sound any different than Tidal.