I've been saying glossy screens are pure cancer for 20 years and every time I was dismissed as a Luddite that should get with the times.
Now they can sell you "nano texture" at a premium after getting you hooked on functionally terrible displays (they look pretty in the store though).
My worst experience with glossy displays was when I had to perform some work outside on a sunny day and I comically could not see a single thing. It looked like a pure black square. I laughed, packed up and left, and told my boss it wasn't happening.
glossy screens are better for visual clarity, especially contrast (reduces eye strain when reading text)