His fifteen minutes ended with me about eight years ago. I realized that Hannity makes EVERY thing he talks about about himself. There's a reason Savage calls him Sean Vannity.
Hannity has always been a northeastern RINO, albeit an amiable one. Not surprising he would back fellow New Yorker Trump. Hannity would not have had a reason to think Trump wasn’t a northeastern RINO who wanted surrender in the Culture War. I think Trump’s move to the right and old-fashioned American nationalism has brought Hannity along with him.