Same boat mate - Aussie govt employee myself who has access to flex. Personally I felt it was better when I was working for an NGO and they always gave me the choice between being paid overtime or banking it to flex later. It was nice to get the extra cash when I needed it and extra leave when the time came too. That should be the standard the employee should have the choice between OT or extra leave.
As a child protection caseworker, I’m right here with you. The amount of children and young people I’m working with who are self-harming and experiencing suicidal ideation over this stuff is quite prevalent. Sadly, it’s almost all girls who are targeted by this and it’s just another way to push misogyny into the next generation. Desensitisation isn’t the way; it will absolutely cause too much harm before it equalises.