alt Hacker News> They probably can't change the license for WordPress. It's under the GPL and it looks like WordPress doesn't require a contributor agreement assigning copyright to someone else. They'd need to get every contributor to agree to relicense it.
Not just every WordPress contributor, but every b2/cafelog contributor pre-fork too, since WordPress is a fork of b2/cafelog in the first place:
https://wordpress.org/book/2015/11/the-blogging-software-dil...
That's assuming any original b2/cafelog code is still present two decades after forking, which may not be the case.
If that code was all entirely rewritten and replaced by now, and no original b2/cafelog code remains in the WordPress codebase, then I would expect that modern WordPress is unaffected by the original b2/cafelog copyright and license. But I am not a lawyer.