You claim Gasthejews6969 is harmless, merely joking about genocide of jewish people. He, among many other on Twitter, are spreading genocidal rhetoric, be it against Jews, Ukrainians or some other ethnic group. Civilized countries criminalize such behavior recognizing measurable harm that they cause. Nazi propagandist have been tried and found guilty as well.
Twitter is being used to kill people, Musk is fine with that. It’s entirely comparable, but the comparison looks damning for Musk and anyone who defends him.