It's not a bad thing, gives you the option to read them on the Fediverse and it proves that the Fediverse could possibly be the future of Social Media. It's good to see other people want to see it grow.
If people don't like it then personally block it, the only reason for blocking a whole instance, instance wide is if it has morals that conflict to much such as a Anti-LGBT instance vs a LGBT one.
Pamasich