But you have to mute each account when trolls probably create new accounts daily just to troll people and make fake engagement between their accounts to get boosted by the algorithms.

And really bad actors are taking advantage of the removal of the block feature, which was useful to block people from easily seeing your tweets, so that it leaves one open to nonstop harassment. Or in the case of Elon, forcing people to still get surfaced his tweets even if they blocked Elon on the platform.