Not sure I agree. If they are getting paid $50K to mow my lawn, then yeah, but a lot of this is appearance stuff, and I'm sure there is justification for large sums of money for stuff like that.
Although in cases where you see someone got a car, then I'd assume the gift tax comes into play (although if it was a car to promote your dealership, maybe not).
NIL is not going to ruin college sports in any way, shape or form. I'm sure it will be rocky at first, but honestly, this first stretch has been way less rocky than I expected.