I have a 2013 MBP retina with glossy screen and a 2020 HP with a matte screen.
What I've found, is that inside, the HP is much better at handling reflections. However, outside, the screen gets washed out and is next to unusable. Whereas on the MBP, I can usually find an angle where reflections don't bother me and I can spend hours using it.
While it serves a useful purpose by diffusing unavoidable point light sources in uncontrolled environments, it's honestly not much of an improvement over its glossy contemporaries in sunlight and other brightly-lit environments, as diffusing already diffuse reflections has little effect.