The Sonos equivalent is something like the Sonos beam connected to the TV via CEC. AppleTV v2 is now obsolete and I think was sold until 2015, so that's pretty much the same as the Sonos policy.
But it's a fair point - for simple setups this can work fine.
Is the Yamaha experience better?
(Also, the Yamaha MusicCast speakers are exactly the same as Sonos in that they are software dependant, and pre-2015 ones don't get the update to AirPlay2[1]. Not clear if you are talking about this or the amps though)
[1] https://au.yamaha.com/en/news_events/2019/musiccast-update.h...
and to confirm the other responders, i have a set of "dumb" polk speakers connected to the receiver. for audio, i'll often just stream to the receiver over bluetooth from my mbp, iphone or ipad (so yes, i'm apple-dependent, but not in the way you meant =)
airplay works well to stream video via apple tv to the receiver (and then to the tv screen).