Between the high fee and rude operator, it's not clear to me why people use this service.
See here.
I am not sure you linked the correct article? That one is a list of all the closed assets from MPEx, which seems like a reason not to use the exchange since things there don't last very long and tend to lose money? Maybe you just need to enlighten us on how it explains why people use the exchange?
Let's think with our thinking hat. Each and every asset GLBSE listed cratered. A purported "exchange" that chiefly lists/promotes scams is indeed an SEC lawsuit waiting to happen. These things matter.