I like to do in-depth research for myself (example: watching an entire Trump or Biden speech instead of relying on a selected soundbite), viewing the original video or source instead of blindly believing on what mainstream media says about them.
Unfortunately as more things get censored from social media/YouTube whether fairly or unfairly, it looks like I'll have to spend more time on "alternative" platforms, being exposed to the stuff that is common on such platforms. In the end, there's going to be the Twitter echo chamber, and the Gab echo chamber, etc (note that Parler seems to be dead).
A slightly more effective approach for you might have been to remove such videos from their recommendation algorithm. But, that doesn’t mean it’s ineffective for people who would be initially discovering this stuff.
Platforms, by their nature, are mostly worried about what's happening on their platforms - when it's occurring elsewhere, it is no longer their problem. It is a mistake to think YouTube wants to bring an end to all misinformation everywhere - their focus starts and ends with misinformation on YouTube. Balkanization is the best option they can hope for, as long as it's not on YT.
The arguments goes in both directions, if you don't handle it correctly then being too heavy handed has the opposite effect.
Pontius Pilate doesn't really care, as long as he's washed his hands of the matter and has rid of the man (and crowds) from his court.