Damn, is he actually that humble or is it just a persona?

Skip to around 4:15 for the actual content.

He's a smart kid and obviously likes himself to a degree that gets a bit annoying but his achievements are quite something. I still find the presentation style pretty entertaining.

That's actually him. The stories of his shitty behavior when he was in college and Didn't Have To Do The Work Because Don't You Know Who I Am (which didn't work out so well) still circulate in my friend groups.