Can’t say I agree. In fact until recently it was my go to app to showcase Dolby vision/atmos to those who wanted to see/hear my home theater set up. (Usually the avengers assemble scene in Endgame)

Do you have Disney±> App Settings-> Data Usage set to Automatic (stream in highest quality) set?

Disagree. Looks just as good as any other streamer. And Dolby Audio on my Air Max is amazing.

Works fine for me, looks as good as all other apps