In some ways, I also disagree with the idea of allowing them to play in bowls. If you're a redshirt, you're a redshirt.
One of the small advantages of bowls is that it allows more official practice time, and I'm sure some of those younger players get more run than they would while some of the outgoing seniors perhaps get a little less.
But we have enough "the rich get richer" issues in college football, and then giving those players extra real-life in-game experience is just one additional way to keep bowl teams up and keep non-bowl teams down.
If we want to have more parity, we shouldn't be making it worse.