I think a fair number of scholarship players are going for a decent degree, I don't know how many on a P5. Some of the starters and stars obviously are trying to remain eligible taking only token classes, perhaps most of them. They used to show the intended majors for players routinely, you'd see "Consumer Economics" a lot, now they don't I notice, unless the player is majoring in something real.
Some of the lesser players with scholarships, or without, probably are striving for some sort of degree. And some come from a difficult background and end up with a degree, even if it's in CE or whatever.