"Most people who disparage Atmos Music have not heard it properly set up end of story"
That's fanciful speculation.
Perhaps... but how many people do you know who have an Atmos system with at least 5 bed level speakers and 4 overhead? How many people have heard one?
No I don't have a number, but I read reviews on prominent audio web sites where they trash Atmos and you come to find out the reviewer doesn't have a system and have never listened to one. They are just guessing , and guessing wrong