I really hate the glossy screen thing. I have this strange idea where I want to see what is actually on the screen, instead of a detailed reflection of stuff behind me. Crazy, right?
Maybe it's touch related? Every screen I own is also a touch screen (so's that old ThinkPad though), and with my physical needs I can't really consider non-touch.
I got a Thinkpad T490 this year, which has a matte touch screen (I really wish it wasn't a touchscreen, my only gripe with it. I never want to interact with the laptop via touch. Never.)
People are very much attracted (I would say addicted) to bright shiny colors. Device manufacturers know this and thus glossy screens are the norm.
Oh how I wish I could leave my light on and still use my multi-thousand dollar machine without strain!