I completely agree. The native Atmos music files on BD have been excellent.There are many wonderfully recorded-mixed Atmos pure audio Blu rays. In the last months I have bought dozens.
There is no comparison with Stereo music in enjoyment, its like comparing black and white movies with todays 4K/HDR.
As far as streaming Atmos content: I haven't tried Apple Atmos mixes, but I am not so happy with Tidal Atmos. I have stopped using it. I would rather upmix the stereo version with Auro3D (Automatic) on the Trinnov.
It might be the DD+, but there is a huge difference with Pure Audio discs.
I haven't had a chance to try the streaming options, they all require some extra hardware or whatever to get. I have gotten a few of the upmixes they use there and I can do as good or better with Auro