The problem is, some monitors aren’t “slightly matte” - many are very matte, and you can’t tell just how matte they are into you receive them, since the finish is always just called “matte”.
Glossy isn’t ideal but I’d definitely take it over spending $500 on a 4K ultra sharp display only to view everything through a fine layer of grainy rainbow colored dust.
Apple’s nano-matte technology seems like it could be a wonderful albeit expensive compromise, but I know I and many others are willing to pay the premium.