The key thing here to recognize is that this unlimited free speech on platforms ended the day Trump was elected. It's presented as about hate speech or preventing misinformation but it's really about class and culture. The top 20% or so of the population, those that are employed by and control all the American mega corporations comprise the professional managerial class. There is nothing they despise more than the cultural values of the Walmart-shopping working class. When those people elected that insane clown as president is the day the professional managerial class decided they need to play a more active role in projecting their moral and cultural values onto everyone else.

Incidents like the one in the article are collateral damage to this policy.