We can’t block them

Of course you can block them, you can block anyone you want… You can only choose to get content from communities you are subscribing to… You can choose to only get local content… And if you want, you can even create your own Lemmy instance, only allow people you want, block any other instance you want and only browse locally…

It’s as if you browse reddit/r/all and then complain that you get the content from subs you don’t want…