I thought so too for a while, but then I noticed that other users were still voting on things just fine. Given that PG is noted for experimenting with the site

I thought so too for a while, but then I noticed that other users were still voting on things just fine. Given that PG is noted for experimenting with the site live, and a predilection for capricious moderation (like hell-banning (not that there's anything wrong with that)), I figured that it being intentional was a strong possibility.