There never was a technical limitation, matte coatings were a deliberate design choice and continue to be. Maybe some people like the "pop" of a glossy display but the rest of us don't like to suffer from glare and reflections while we work.
I already said why: reflections and glare make for a terrible work experience. That's why matte is the default preference for most people.
> Like if you wanted it blurry you could have done that in software.
The "grains" (for lack of a better word) in a matte coating are truly microscopic. They don't make anything blurry. I get the impression that either you're just trolling or you've never actually seen a matte display.