I haven't seen that much support for '"freedom of speech" for those who stormed the Capitol' - the big conversation here has been around the deplatforming of Parler, which clearly serves a bigger audience than just the rioters/insurrectionists. (Not counting flagged-dead throwaway account comments blaming it all on antifa, of course.)
> People who aren’t of a militaristic, racist, fascist, or seditious bent are still welcome in other fora like Twitter and Facebook.
Problem is that such people are mostly welcome to those sites as long as they belong to the right groups. If you rant about women or left leaning people etc on reddit like women rant about men or left leaning people rant about right leaning people then you'll likely get banned.
So the large group of people who just wants to rant harmlessly but aren't allowed allowed to do it on mainstream sites has nowhere to go now so they seek out sites like Parler where they then get radicalized since the environment is so toxic. It would probably be better if Reddit etc was a bit more tolerant of them, but it is what it is.
Actually, there are still rant on women subs on reddit. And rant on left reddits. And anti masks anti lockdown subs on reddit. They all also exist on Twitter.
The people who want to rant hatmlessly without brigading other subs and without harrasing users of other subs are still there.