Well yeah, at that distance you are supposed to notice the difference in resolution, and presumably the difference between matte and glossy. Most living room situations aren't like that though.

Btw, that page in general is great if you want to optimize your viewing experience: https://www.rtings.com/tv/reviews/by-size/size-to-distance-r... :)

I'm also someone who cares enough about fidelity to do 10-point tuning on my displays and speakers, so I get your frustration!