I cant believe they have been allowed to get away with it this long.
Yobit is a snake in the grass, very hard to combat without physical office locations and unknown operators. I'm pretty sure that if regulators start to dig in for real, they will be able to knock them off the internet, but what happens after that is they will relaunch just like what BTC-E (now WEX) did and the same problem pops up once again, just under a different name.
The only effective way to get rid of Yobit is to have people stop using that exchange for once. If there is no demand for Yobit, they have no other option than to shut down eventually. No exchange will operate when it costs money instead of makes money. Yobit in the end is nothing more than a reflection of how fundamentally shit this whole crypto space really is. Yobit does nothing other than fill up the demand coming from lunatics.