Yeah, most people aren't within 6 feet of their TV, and most people aren't buying 100" TVs either. 8K is relevant for virtually nobody.

A lot of companies are successfully working on larger panels (I saw something about a 165" TV recently), so 8K may have a good place in a theatre room one day, but that still leaves you a lot of problems to solve first, and is far from mainstream until all of that becomes a lot cheaper.