Another concern: by your logic, net neutrality should be moot. Let ISPs choose and throttle online service by their whim.
Anyway,"freedom of speech" is actually intended to prevent any dictatorial entity from hiding the other side from the public.
imho, If the 'democrats' are actually 'democratic', they should have solved this with a much more elegant solution - eg. inviting people to a common, shared platform and refuting them there. Current FB/twitter/aws solutions are rather 'easy but dictatorial and may backfire', which is somewhat 'republican' in taste...
(* by backfire: pro-trumps can think: "The other side is trying to snuff us. What are they hiding? Are they more evil than imaginable? We should do something to guard USA from them"
imho, the root of the whole fiasco is actually the press preventing the broadcast of Trump after the election. (the 'snuffing') Better solution would be having open discussions to refute the pro-trump people.
Another thing is that by-standers will note about how 'undemocratic' the whole solution is, and whether they'll also be treated if they end up being the 'other' side of other issues