is that you're not talking to anyone. it might feel or even seem like you are, you might be quoting someone's post or otherwise using inbuilt reply functionality to attach your words to their words
but they aren't there, that isn't the locus of their person. you're posting again, and you might have grown so blind with rage or so sunk with cost that you don't even consider that you're posting, you're putting posts into a website instead of anything else you might do instead
the calculus of who hears and doesn't hear, who listens and doesn't listen, is all fucked for posting through it. you won't find what or who you want; you'll find only what or who you don't want. and then you'll think to post through that, and you're caught, you're trapped like anything that's ever been trapped