It also serves as a vital thing to prevent radicalization because that's what echo chambers usually create. In that sense i'd welcome it if people who I strongly disagree with also came to this platform because it would create dialogue. Some are here, its my right to block them if I find them annoying such as the ones shoving their stuff into unrelated tags. But its their right to be here and spread their ideas so that they can be debated and countered which keeps everyone mentally in check.