Yeah. Once games are rendering 120fps at a native 6K downscaled to an amazing looking 4K picture, then maybe you could convince me it was time to get an 8K TV.
Honestly most people sit far enough from the TV that 1080p is already good enough.
I find 4k is nice on computer monitors because you can shut off anti-aliasing entirely and still leave jagged edges behind. 1440p isn’t quite enough to get there.
Also, there’s some interesting ideas among emulator writers about using those extra pixels to create more accurate CRT-like effects.