To expand on what you're saying here, YouTube allows offended people to bully them by contacting advertisers and saying things like, "YouTube is putting ads for your company in front of videos about hitler!!" And YouTube just immediately caves to that.
YouTube's response from day one should have been, "no, we don't put ads in front of videos, that's not how this works. This isn't tv where the ad is broadcast whether someone is watching or not. This is a website that plays videos you ask for. We (youtube) have data about you. We (try to) select an ad specifically for you. We did not play that ad for Pepsi because it has anything to do with hitler. We played it because (our data suggested) the ad is relevant to you. And then afterward, we played the Hitler vid because that's what you clicked on."
That seems like such an obvious, slam dunk response to me. I think the reason YouTube didn't push back in that manner is that they welcomed the excuse to start pushing political content they don't like off their platform.