It’d be very easy for a foreign agent to sneak in with the crowd. In one of the latter videos on that thread, it looked like she was directing/encouraging people to push forward.
Anyone know why? Was it deleted? Suspended? Region locked (I'm in Canada).
Try refreshing the page when you see that message.
Open the web inspector, switch to the Application tab, click "Service Workers" in the left sidebar, and unregister everything that shows up.
My understanding is that this behavior is caused by an old version of their service worker which they've had a hard time getting rid of.