The YouTube algorithm is not going to spam political videos unless someone starts looking for them. Same with cooking vids, anime, whatever. Users don't respond well to spam.
These content creators, both on the left and the right, expect google to spam users, generate the creators ad money, and at the same time, shield content creators from advertisers and their desire for non-controversial shit.
It's a tale as old as time. Before YouTube, it was TV. Before TV, it was radio and print. The short period of time when ad revenue was good was due solely to the simply that that YouTube ads were so new and advertisers didn't realize immediately how bad the return was for their investment. I know a lot of people blame SJW's for the adpocalypse but the reality is, completely apolitical channels lost just as much as money as everyone else. Advertisers were paying for what they thought were Superbowl commericals, for ads that had the response rate as mailed fliers. Once they figured that out, Youtube was no longer getting the buy rates they once were.
All these people live in a bubble where they think they can make rambling, long ass videos as a long term income source.