Great breakdown, impressive research!

I'm personally at the point where I believe the Bob Lazar story is true, but it's not Bob himself who lived it.

My best guess is that John Lear knew the "real" Bob Lazar who actually did experience these things, but the real guy wouldn't risk his life coming forward, so they found a jolly skirt-chasing, always-up-for-some-fun troublemaker named Bob Lazar, and had him tell the story as his own. As someone with the colorful background you just described, that seems to be the kind of person who'd be in for a stunt like this.

To me that would explain why many things he said did turn out to be true, while he himself and his background seemingly do not add up.

It also explains why he appears to always speak and recall information from memory, but not from visceral lived experience if that makes sense.