I think this is failing to imagine how bad things could get societally. Imagine if more consumers and advertisers start enjoying consuming and being associated with malevolent, hateful, and violence-inducing speech.
Many in the 1930s-40s enjoyed the hateful caricatures of Jews that the Nazis produced in their propaganda, and hateful people also buy refrigerators and sneakers today.
Yes, that would mean a majority of people would have to adopt those perspectives - to the detriment of society at large - but it's happened before in many parts of the world, and could happen again. That is a long-term goal of fascists anyways - to re-normalize that kind of thing, and to re-combine industry and media with a religious ethnostate.
At the very least, the previously quiet pre-existing enjoyment of malevolent speech has been exposed for all to see over the last several years. The question is whether it has a growing audience.
I'm not saying that's Elon's goal, but accelerationism seems to be something he is aligned with as long as it doesn't come at a cost to him.