My discussion of Chinese foreign propaganda translates nicely here. I certainly agree with your sentiment - there is a duty in free speech, but that duty entails responsibility in our approach to using it. While I am not accusing you of trying to manipulate anyone, the statement "if you remain silent, it's your fault" is one of the oldest forms of agitation propaganda known to man. The left uses it too, see the "silence is violence" trend from 2020. It's a false dichotomy - I can be silent in real life, but very vocal anonymously online, as many people are. The goal of such statements is
only to draw everything out in the open, to divide people (artificially, mind you) into different camps, and to facilitate further manipulation once individuals have become a mass.
The duty of free speech is to use it to find the optimum solutions to problems, but that can't be done by agitating people to join an unthinking crowd. That is poor strategy that will ultimately allow power-seeking individuals to prey upon your ideals to get what they want. Do it if you desire, it is your right, but it's not going to get you what you think it will.
Free speech is also for leisurely shitposting