I'll agree there are much more neutral & accurate titles that could be used, but given that the title is factual (For some reason, Apple has begun enforcing a policy that they were being selective about previously, and is now indeed rejecting apps that use Dropbox.) and the source is a post to the Dropbox developer forums (not a blog post.) I don't think this title is far enough off the mark to warrant changing it.

Linkbait might be "Apple still bitter Dropbox rejected buyout offer, bans API from App Store." ;)