I think you're right. It was probably politically motivated, at least indirectly. It was more likely due to coordinated flagging efforts rather than a human at Google deciding to ban the account.
He's getting a lot of support from the right, the center (e.g. Joe Rogan) and from many on the left such as Sam Harris as well. In all cases, it seems to be for free speech issues. He seems to hold a deep opposition to political extremes, though it's hard to tell what he favors other than free speech since his videos meander into mythology and literature so much.
