This is completely false. I might even say that it is wishful thinking. Some kind of "long arc of history bends towards justice" make-believe.
The contrary is almost certainly true: picking fights with well-selected made up enemies is an effective way to promote a brand that is based on virtue. It transforms an inactive/passive audience into an active participant in a movement. I would bet many of the people attacking this art critic wrote their first comment in defense of this artist. He subtly said "I need your help" and his audience reacted.
The art critic noted the manufactured TikTok videos, obviously planned by a media savvy PR team. Perhaps he isn't cynical enough to believe it, but this sustained and coordinated attack against him may well have been planned and orchestrated.