Fact1: There are good people in CASA.
Fact2: There are complete turds in CASA.
Pleas don't tar everyone with the same brush, CASA are no different from many other modern organisations, and don't think their current overbearing attitude is sustainable - it's just a trend until the turds move on.
and the interpretation varies according to the interpreter
Which can also work in your favour by referring any issue to other staff or escalating disputes - this has recently worked very well for me when dealing with CASA.
Finally, I could never do the kind of flying I do here in this country than what I see in another European country that I frequently visit where you can go to jail for just photographing an airport.
I say this as someone who currently has a gig with the feds (not CASA) and I reckon we could get rid of 50% of our staff (another work colleague argues 70%) and the public whom we serve wouldn't notice anything. Sadly. it's a sign of the times due to broader social issues that extend beyond that of the basic work tasks required of an individual.
Don't give up.