I think the best proof that youtube algorithm doesn't radicalize people is the fact that somehow no matter what your watching or what your doing you will somehow end up with either a cooking , crafting, or other kind of light hearted content. A great example of this is when i woke up today i woke up to the sounds of a glass works competition and youtube had been playing about four hours of said content. If that's not pushing me away from modern problems and radicalization i don't know what is. [This also must imply that i was watching radical content or content that would lead to radicals which i wasn't unless your definition of radical is center or slightly right leaning content.]