There is also something to be said for how complicated many of these games are. They could be a lot simpler with a lot less math. It's one of the ways gamers seem to think casual gatekeeping is perfectly acceptable.
Almost none of these games have a genuine tutorial either, the way pretty much every video game does when systems are this complex (not that there's uniform quality there). I just ran the Fabula Ultima "Press Start" tutorial mission for one of my usual groups of fairly new players, and the way it teaches through the character sheet by "locking" them with a number and then giving the GM some instructional text and an immediate scene to run that uses that portion of the sheet is nothing short of brilliant.
By the end, everybody grasps the fundamental core systems and math together.