That's bonkers. What a silly system. It's more complicated than it needs to be, and it seems to be a disadvantage to emergency vehicles vs. what we have here. I've never seen an emergency vehicle not get there relatively quickly here, just the other day there was an accident in front of me and the ambulance came fairly quickly up the shoulder, no issue.
If you give a whole bunch of idiots a full lane, just sitting there, with noone in it, during a traffic jam, of course there are going to be morons who just can't wait their turn.