I clicked on one of his videos like a year back to try to figure out what all the hubbub was about. I have auto delete history after 3 months on. Only video I ever clicked on about him, I still occasionally get inundated with his videos every once in awhile. I can also confirm that using YouTube in this way does not lead to a lot of variety, even though I am subscribed to a large amount of things. The video recommendations do not seem to ever show me when people I'm subscribed to post videos.