Facebook, Twitter, Youtube and Parler are all bars. The gang members (insurrectionists) went to the Facebook, Twitter and Youtube bars and got into fights. The Methodist (non-insurrectionists) went to Parler and did not get into bar fights.
According to you the solution is not to ban the bars where the bar fights took place but the place where there were no bar fights. It really makes no sense.
It was a power play. One (ideologically uniform, and quite likely coordinating) group asserting raw power over another. Because it could. And in doing so, making sure this was public and messy. As a warning to others.