Lol, just shows how much these guys know.
All FM channels are 200kHz wide, therefore a station centered on 89.3MHz will have a channel that ranges from 89.1 - 89.5MHz.
As you say 2GLF bleeds all the way down & up, that’s because 89.1 is the bottom of their channel & 89.5 is the top of their channel, so they are quite legal to be like that, they’re not bleeding anywhere.