Well at least now we know where the issue lies... you’re blind
Your own chart shows Ultra HD at 6’ is fine even for a 55” and my screen is WAY larger. Who the hell sits 10’ away? you’re grasping at straws.
The bottom line is I’m getting the full benefit of 4K and even beyond, based on the chart I could even go up to 8K and start seeing the benefit. So speak for yourself.
Again sucks for you if you’re still gaming on a 30” 720p set, and I’m not judging, but don’t come at me with some bs charts to tell me what I can or can’t see lol.