> OTOH, if these are based on foreign disinformation, governments need to do a better job shutting that down.

Everything is based on disinformation, both the west and the Russians have been engaging in widespread propaganda efforts. You only need to see the amount of "Putin has cancer, he's about to die" "there's about to be a Putin coup" on the worldnews subreddit to see that the propaganda is flowing copiously from both sides.