Signal is up - everything seems slow online, though. Getting normal congestion at the ISP level, looks like the side-effects on the web in general are noticeable when facebook goes hard down like this.
It's not for me. But several services seem to be a lot slower, possibly due to network effects (haha) on DNS as many devices are repeatedly trying lookup FB domains and not finding them, so they just try again and again.
And Telegram is extremely slow. Probably the number of new users.
I had an hour+ video meeting on it a little while ago.