If the NIP-54 wikis drop markdown to adopt asciidoc, we get a race to the first functional-enough decentralized wiki with Wikipedia already copied onto it.
A wiki using wikitext will probably win. Wikitext is almost as bad as asciidoc - it has all the same flaws except it's already had mass adoption so it's got a purpose for compatibility's sake.
If converting wikitext articles to asciidoc articles can be automated and done fast enough, maybe the NIP-54 wikis with asciidoc will win the race, which is shitty because people won't be able to just copy and paste between different platforms unless other platforms also force users to adopt this asciidoc trash.
Using wikitext in the first place for compatibility would have been great despite wikitext's issues but markdown is the best alternative and it's shocking to hear a suggestion to switch post-release to some completely awful new thing. It's lucky fiatjaf dodged this bullet until now and made NIP-54 good in the first place because none of my wiki entries would even be on nostr if NIP-54 used asciidoc from the start.