I'm not going to defend what he said, but if you look at the interaction it clearly took two to get into a juvenile Twitter fight, the other guy was no paragon of class himself. That aside, while it wasn't OK for Musk to say that, the blowback was IMO indeed disproportionate. How many other millions of horrible but effectively inconsequential statements on Twitter are routinely ignored? The guy's livelihood wasn't ruined and Musk was roundly rebuked.