You should probably stop pretending you know what myID is, and what it does.
Its a sovereign identity verification service. That is not limited to above PL2 verifications. There are age-only accredited entities in the registry.
Its one of the approved verification tools for the Online Safety Act 2021 . It was renamed as part of the passage of the law. You're just not forced to use it, for verification.
And yes, it does it poorly, and does not follow a standard. Its using Vanguard's PAS behind the scenes [1], with extras ServiceNow tacked on. Until they rearchitect the entire damn thing.
So... As I might have doxxed myself a little just now... No, uploading identity documents is never a safe process. Its a king's hoard in treasure before nations that never sleep.
Name a provider, and there will be a breach, and it will continue to affect the victims most of their lives.
[1] https://www.sec.gov/enforcement-litigation/administrative-pr...