Was curious and found this:

Predicting somebody with some opinion on op return is gonna point to these to further solidify their position.

I don't know, but I had to stop following nostr:nprofile1qqsvche9nupkdqme3e99ypcahwtj8pczl7m0pjz67mf88jxahewq47cpz4mhxue69uhhyetvv9ujuerpd46hxtnfduhs2x3x9q

Saw this note & googled OP_20 protocol.

nostr:nevent1qqsrycyr2867dsqtzrxaxxnsnuexls0jnz222dkdjzl88k34rghrwmgzyz4vqlv4pzwwdt0s3wg4d4purf9tt9xxzv9hmjcjasveqzx9sxdz7qcyqqqqqqgprdmhxue69uhkummnw3ezu6r4wdax7mn9vaujuam0wfkxgrm28xq

https://sovryn.com/all-things-sovryn/op-net-bitcoin-metaprotocol#block-detail-6

It’s a play on Ethereum’s ERC-20 tokens

Muting "brc-20" and "op-20" seems to do the trick