Wait not quite, that's btc unlimited nodes that were switched off. That's some catch-all for the scammers of cypherdoc/jbreher class to run weird nonsense like xt/unlimited/cash other shit.
I'd guess they're (btrashers) saving up for another attack when Craig Wright comes up with marvellous new patented softwares.

This graphic was floating about at the same time, and seems to paint the status quo more accurately.

think it's adapted from http://coin.dance/ (down right now , i wonder why)