THANK YOU!
Sometimes, you should just click the “help” menu 
I’m so used to “help” not being any help that I didn’t even think of that (“Help” -> “Disable Security” in the Parted Magic Secure Erase tool).
(And yes, I’m using the subscription version since this distribution really helps normies a lot - even I can tell a shitty the SSD manufacturers’ software tools are, it’s just nice to be able to have all these features with a user-friendly GUI)