What dude actually did was disrupt communities, which after all the talk about free speech, seems to have been a lot of the point.
Despite whatever personal feeling about Twitter you may have, some people liked it, formed social bonds there, and worked hard to post fun and interesting content. Not all of it was political outrage. Moderation policies were put in place by the old Twitter to make the experience of those people better, and Musk took those protections away. So now those people are in fact leaving after facing a deluge of hate that all of a sudden (for whatever reason) surged when Musk took over. That's the problem. Now my social network is spread across post, mastadon, substack, reddit, and twitter. And for what? To turn Twitter into Truth Social, which itself is trying to be Twitter? It's all so pointless and yet real damage to real relationships is being done.