I believe some Nostr apps support this. We're planning on adding it to nostr:npub1pu3vqm4vzqpxsnhuc684dp2qaq6z69sf65yte4p39spcucv5lzmqswtfch. You can also mute, follow, or ignore any nostr feed, including those like nostr:npub14h23jzlyvumks4rvrz6ktk36dxfyru8qdf679k7q8uvxv0gm0vnsyqe2sh who are making reports you're not interested in seeing.
Discussion
The devs implement in their clients the tools that they believe are most appropriate for their growth, this is not a democracy, others decide whether to support them or not, even implement them... in addition to expressing each user's vision
nostr:note1ze3ag0znga25a80stw99hxz7m3ee37y4slmg6duaxnju8nel64jqk74sq0