I take the opportunity to comment every time he glosses over it
Guess it depends where you’re coming from. “Audiophiles” (and equipment manufacturers tbh) would naturally gravitate towards Tidal and Qobuz - they probably have more street cred than anything from that nasty big leviathan Amazon. I’m not even that sure that many hifi shops are aware of Amazon Music Unlimited - it’s not supported on Roon, so that would be another reason it’s not considered or in their mind.
I used Amazon music as the family all had Amazon echo devices, and I also had an Amazon Auto device which gave me voice control in the car. I could also use an echo to feed that into my Linn amp/streamer albeit using whatever DAC was in the echo - that’s why I jumped on a WiiM Mini when it appeared.
I’m happy to be in the minority