I really wish there was a robust way to block channels on YouTube. There is one YouTuber (Simon Whistler) that I check in on a lot--not because I enjoy his cont

I really wish there was a robust way to block channels on YouTube. There is one YouTuber (Simon Whistler) that I check in on a lot--not because I enjoy his content, but because he is a parasite. He did paid voice work for me for years, but then one day I discovered he had started working with a competitor, and together they were systematically poaching my entire catalog of non-fiction content. They started releasing videos covering the same obscure topics with the same details, sometimes even using my original artwork without permission. It's been going on for years now, across multiple channels and hundreds of videos. What he's doing is (mostly) not illegal, but goddamn is it slimy. I keep an eye on his channels to catalog the egregious poaching, but as a consequence, YouTube thinks I'm his biggest fan, and keeps recommending his videos. I am tired of seeing his smug, parasitic face in my sidebar. What a scumbag.