I did get a response on my complaint and at least it wasn't a boiler plate response, it seem to be written. They did at least note that people who do have lounge access and get passes will miss out.
I probably should have suggested some sort of waitlist or even blackout times as they did note their major driver was overcapacity.
I think my main issue with that, particularly in the domestic lounges is recently at certain times the lounges have been very quiet (particularly at night), and say if you have like a 10pm departure, they could have a provision that they will accept passes and that you can't arrive before 7pm for example.