They're people that don't want to read your posts or want you in their lives at all
Or just have other issues and use you as an instrument of their feelz.
If you wanted to talk to them, you wouldn't have treated them like crap in theory etc right?
In theory, maybe, but even that's not necessarily true.
The only person to actually have me blocked, I barely even talked to them and the last time I did they +1 a post of mine, meawhile their significant other responds to me all the time.
Other times people (claimed) blocking me for nothing I did to them personally. It just goes back to being used as an intrument of their feelz in the moment, despite not actually saying/replying/or indirectly doing anything to them.
Back in my day, we used to call these people crazy and ignore them. Now it's quite the opposite.