Now I love the fediverse. Local instances mean more local news/gossip, but at the same time I can follow global interests (just saw a post from Brian Krebs, for instance) just as easily. Hashtags let me follow my interests, and comments are more constructive and perceptive because there is no reward for provoking people. I don't doom-scroll any more and I don't have to filter out advertising - I'm much more efficiently informed.
Why does it matter?
If I block people in a Discord server THEY can still see what I type. Why does it matter? I have really come to understand that some Twitter users see Twitter as their own private garden somehow and do not realize that anyone can see your posts... So somehow it becomes uncomfortable when they are reminded of this fact.
An example of blockers losing value: Tesla bears were chronic blockers, even passing around blocklists. Nowadays Tesla bears seem to have lost all relevance.
People get blocked for all kinds of reasons, most of them relatively innocent.