When the world was simpler....
People who did really bad things only came out of prison one way, in a box. Those who hadn't been quite so bad, generally served their full sentences, outside of rare cases.
And those people who got out, (in theory, at least) were allowed the means to defend themselves, if they desired.
I think part of the problem with the discussion is the virtual stock acceptance that all "prohibited persons" should, and ought to be forever prohibited persons.
There are a LOT of decent people in our nation that at one point in their lives got a case of felony stupid. Some of them would like to be able to legally own a gun, for that "just in case". Unfortunately, the legal mechanism provided by law for this purpose is broke. As in not working, because Congress does not give it any money.
Many things that were once minor disturbances of the peace are now much more serious in the eyes of the law. And more of them carry the lifetime prohibited person label attached to the other penalties than ever before.
Our system is not working very well, and many people suffer from its flaws. But I don't think giving some one a gun when they get out of prison is a good idea. Not unless you are going to give everyone else in the country the same gun. Do that, and at least we'll all start equal.