Most guys come back in college if they have eligibility, for whatever reason. So if you take out the guys with eligibility, kicked off, and injured you are probably left with 8 or so.
If you are willing to accept the fact that even Bama has guys not drafted, then 3 probably isn't all that surprising.
Kelly is failing, but this critisism is just because you don't like him and anything he does will be a failure.