No he isn't, and no he couldn't.
Rudy isn't intelligent, let alone "very" intelligent. He's not dumb in the sense that he's (probably) not an actual retard by IQ, but there is very strong evidence that his IQ is average at best. And this is borne out through his behavior. He couldn't finish college, he can't finish books, he demonstrates a surface level understanding of subjects he researches at best. These are all hallmarks of an unintelligent person.
But perhaps most damming, Rudy demonstrates a lack of critical thinking. He does not question his favored sources, and instead treats them as gospel. This is especially embarrassing since most of the sources' theses are in conflict with actual evidence, but even if they weren't, a smart person would still think critically. Rudy doesn't. This is the very reason he dropped out of college, because he's can't put up with conflicting ideas, and lacks the intellectual wherewithal to push through when challenged.
And this leads into the second point, no he couldn't be an intellectual. For one, that's a very nebulous "job," the only clear requirement being that one be "intelligent," which Rudy isn't. So that's out.
But even ignoring that, most definitions also require the person engage in critical thinking, which rudy doesn't. They also require someone do research, which he also doesn't do. He just pretends to read books.
The most I can say is that he does try and make a living off thinking about the world for a living. But as his content shows, he sucks at it. He's trying to be an intellectual, and failing, and we have no reason to think there's some reality where that is different.