[Osmose]

The problem is that he has way more influence in the world than you or I due to his status, money, connections, etc. The amount of harm resulting from him being in an echo chamber is much larger, especially since he actively posts in order to influence large amounts of people.

People judging you for your blocking is one of the prices you're socially expected to pay in return for those privileges.

[ratww]

It's not his job to give anyone a larger venue to reply.

Someone popular being in an echo chamber causing problems for society is a larger issue that maybe we should address separately. It's not on him to solve problems created by social media at large. Maybe limit reach of Twitter accounts.

Even if it were kind of his responsibility, that doesn't preclude him from being fully in his right to block people when he doesn't want to interact directly in a social network. That should be an inalienable right.

You can criticise anything you want, and I'm not saying you're not in the right to do so. But saying this is a problem comparable to cancellation is making a gross exaggeration.