But what do we call when Elon grouped #nostr links in his external link ban?

nostr:nevent1qqstfpdxwapn6wt220u303cft6nfaf4qjvryu9drzpmtgv7753cmpcgpr3mhxue69uhkummnw3ezucnfw33k76twv4ezuum0vd5kzmqzyrhxagf6h8l9cjngatumrg60uq22v66qz979pm32v985ek54ndh8gqcyqqqqqqgae5whx