The reported posts included content that denied the Holocaust and promoted white supremacy. In response, Musk called the researchers a "bronze tier psy ops."
Check their post history. Next most recent comment is calling Lyft sexist for letting women select the gender of their driver, and the one after that is saying that there should be no limits on landlord's ability to evict.
Depends on your understanding of free and uncensored speech. I think that's different between the US and most of the world as a lot of countries never had the same total free speech policy and have always criminalised hate speech.