AJ knows what he is and flaunts it. NDT thinks he's god's gift to humanity and makes that point painfully obvious while simultaneously assuming you require convincing of that "fact". He's also a stunning example of the Dunning Kruger effect.
I think there's a feeling that NDT is representing himself as some sort of ambassador for "science" when quite a few pro-science people find him a bit pompous. Or maybe there's more vitriol because a lot of people used to like him and have now changed their minds.
With Alex Jones, he's just someone that no one with half a brain could take seriously. Of course he's an ass, but also that's just kind of a given.
That's a great question. I really don't understand why almost this entire thread is so pissed at him for making some stupid tweets. Who gives a fuck about tweets? Even years ago.