> Free speech is about ideas, not being a dick.
You want to personally try to have civilized discussions where you resolve thorny issues that people are passionate about, and may hold utterly objectionable views about. Any given person should do that even if only from self-interest; why waste your life trolling?
The entire Gab application promotes an intellectual sewer, and that's because its business model (same as Twitter's) rewards bad behavior.
But "free speech" in the context of a protection is generally about needing to protect the speech of people who aren't polite, who have objectionable views, etc. And that's because they are still human beings and, absent material harm, have an inalienable right to self-expression.