@DashEquals@linuxrocks.online as someone who has been on the receiving end of harassment, that part of the block is very needed and necessary. it tells the blocked person "enough - let it go". it at least makes them go through some amount of hoops to see someone's content, and administrators can then point to that as circumnavigating a block in order to continue the fight.
it's a basic - and extremely necessary - boundary that every social network needs in this day and time.