I’m an audio video tech installer. We do it all and it comes down to distance from tv wall.
I personally have an 85 Sony Bravia 4K and I recommend most living room set up wall mounts to be anywhere from 34-38 inches from floor to bottom barring your couch is incredibly close to the wall (in which case an 85 is too large for the proper distance to enjoy, but some ppl have a preferred preference).
The standard distance is typically 75 inch TVs (7-10 feet) and 85 inch TVs (8-12 feet). Longer is fine but that’s the minimum recommendation.
Whoever is putting an 85 inch 20 feet off the ground to me is doing a disservice to your neck/eye comfort level which is how we explain it.