Free speech means that everyone gets an opportunity to voice their opinion in the town square, regardless of what that opinion is. It does NOT mean that everyone's voice gets amplified. The algorithm correctly ensures that the best and most engaging posts bubble to the top. But if people are voting with the mute and block button that they don't want to hear from someone because they have garbage takes or are simply trolling, then why should the algorithm amplify those posts? That wouldn't make any sense at all.