This is the part of the whole internet-anger about this I've never understood.
I hate having recruiters call me. It's actively annoying. Having only Facebook recruiters call me was strictly better than the alternative that all major tech company recruiters cold call me, which started happening right after this broke.
I'm totally in favor of distributing more profits for all enterprises to workers, tech workers included, but "we agreed to not annoy one another's workers, but we're happy to hire when they apply" isn't really the story people tell. But that was my (and it sounds like your) experience of this.