Like most things, it's far more complicated than people like to believe.
How much?
Does every school pay every player in every sport the same amount?
If all anyone gets is a few hundred bucks, are they still "exploited"?
Does one school pay a player more than another school?
Do the players pay taxes on this income? Why not pay taxes on their scholarship income?
There are seemingly endless problems when opening this can of worms
This absolutely right. Does the 2nd string left tackle get the same as the starting QB? Does the women's softball catcher get as much as the men's basketball starting point guard?
Can of worms that doesn't need to be opened. The deal being struck right now is the best one. You come play for my university and we'll pay for your very valuable education. Btw, you'll also be much more likely to get that job offer here in town/state/region because of your heightened visibility/profile that you now have because you played college athletics at our university.
The only thing I would change is letting athletes get a job in the offseason so they can earn some spending cash like other students. That restriction is dumb IMHO.