Yes, that's correct. While I dont use Twitter or Facebook, I don't subscribe to every community on Lemmy, and in the communities i do subscribe to, I don't open every post -- least of all the ones i actively don't want to see the content of. It's very easy to simply not read the things I have no interest in seeing, and if I do happen across a discussion I'm uninterested in, I realize ky mistake and close it.

This really isn't rocket science, dude. Have some personal responsibility for your media diet and stop worrying about everyone else's behavior. It's a far less stressful way to live.