And why should we be using cancel brigades' definitions? If freedom of speech is not freedom from consequences for your speech, then freedom of speech automatically exists everywhere and the concept is meaningless.

Obvious there is judgement for when consequences rise to the level of being coercive - someone giving you a dirty look is not, the de jure government sanctioning you is. But trying to define rights binary-axiomatically is really just creating lemmas for cryptofascism when the preconditions have been met but yet the rights are still missing (which is exactly what the cancel brigades are pushing).