why not on Nostr: npub1cx7gl…28tc2 It seems to me the thing that could make quotes complex is ...

npub1cx7gljur9tl4zss45ekcm0xuw20v4xxx0337695dq5xr468wpeasc28tc2 (npub1cx7…8tc2) It seems to me the thing that could make quotes complex is notifying the quoted user of the event.

As for safety, one could have a no-quoting flag on their account. However, that could be bypassed by determined users so I'm not sure its worth it.

Generally, blocking should have an effect on quote posts by not showing the nested (quoted) part.