Yes, I'm sure it's a personal preference.
Musk and Page and Bezos all present with a bit of giddy schoolboy energy. It's clear they are all super excited to be building the future and can't wait to tell you about their cool new tech. They aren't polished presenters, but it doesn't matter.
Cook and Nadella are both very polished and calm, but still manage to convey a lot of excitement about their companies.
That leaves Zuckerberg and Pichai, who are, in my view, too flat and robotic.
Panos Panay is the best at this. I think he even beats Apple execs at exuding earnest excitement for the products he's demoing.
+Jensen Huang in the former category
I'm sure, and he's an effective speaker. But that's not the same as being inspiring, charismatic...stuff you need to be an effective leader. May be Google employees can pitch in?
I find him to be very approachable, honest and calm presenter both internally and externally.