I signed up for an Optus Sim when I was 12, so I didn't have any ID or anything like that, but there was a period of time where they allowed you to use a PayPal account as proof of ID. I was able to bullshit my way through the PayPal (and Optus) sign ups and they just never questioned it. So thankfully they didn't leak my ID. They did have my actual name and address though (and phone number and email I guess), but that'd not too bad compared to how bad it would've been if they'd leaked my license or something
I'd also stopped using that number and had moved so it's only my email and name I care about being released. But I already get a ton of spam to that email anyways so it doesn't matter that much.