Honest question - why not just unfollow those people that incessantly tweet worthless information? I'm not saying its easy to find quality Twitter users to fol

Honest question - why not just unfollow those people that incessantly tweet worthless information? I'm not saying its easy to find quality Twitter users to follow - but its certainly easy to unfollow bad users. Twitter could certainly improve their algorithms that recommend people to follow, surface good content, etc.