He interviewed with Dave Rubin and Joe Rogan. Also who on the left would interview him? That's the issue with claiming that he only talked to one side.
That's a very deliberate choice. He's no martyr of rational thought.
Is Joe Rogan not a centrist? He is self proclaimed liberal on most topics, right wing is a silly label
Watching his interviews with various people who are more left leaning doesn't give me the impression that he is alt-right.
If he were more 'soy' and less 'bro', while having the same mostly-liberal opinions, he'd get an entirely different reaction from the elite cultural left.
Think culturally lowbrow vs cultural elite. Rogan came up as a cage fighting commentator. In Europe there would be a lot more techno blasted out of a much smaller car.