Scale it down for argument's sake, such that people are using a video service that you own and operate to spread extremely destructive false information about everything from elections and politics to public health. Your first reaction is "This is fine, the marketplace of ideas will sort it out in the end." Instead, it turns out that the more offensive, destructive, and just plain stupid the content is, the more people eagerly lap it up.
Are you going to take steps to prevent this from happening? If not, how are you not at least partially responsible for the real-world consequences of the videos on your service, which seem to be mounting by the day?
How about if someone posts a video calling for political assassinations or other violent criminal activity? Do you act to keep that sort of content off your channel?
Where do you draw the line? And why should Google be prohibited from drawing the line at all?
None of this justifies the unaccountable use of flawed algorithms to delete random channels, of course. But that's a separate point from the one you've raised.