The person href is not suitable as an identifier because sometimes the link goes to a page like the staff page of a church instead of a page for the single person. This means all staff members get the same url.

https://fountain.fm/episode/nhJe7r5VlQqR1OjC7A0Y

nostr:nevent1qvzqqqpxquqzqmy2lzxkctxtsh9jz4ujy3qs9c5rl43s22r375dr7wuwxpajslqgws6x5v