Of course you are right, but there are things more annoying than breaking backwards compatibility. One of them is Asciidoc. Asciidoc was a huge mistake, I got swindled by their marketing.
Also the differences are small (most articles are just text anyway) and there are few implementations, the articles have broken formatting everywhere anyway.
I should have just merged the change sooner to save you a headache, but I was ashamed of doing it and afraid of
@Laeserin, and waiting to see what
@PABLOF7z would say about it.
https://github.com/nostr-protocol/nips/pull/2242