It sounds like they are over-complying in response to recent legislation:
This is due to an update to the ‘Emergency Call Service Determination’ (ECSD), in the explanatory statement it says:
“Subsection 6(2) directs ACMA to include requirements for providers to identify mobile phones unable to access Triple Zero, notify the user, provide assistance if necessary to access an alternative mobile phone, and cease providing service to the affected device. Providers will also be required to not provide service to a prospective customer seeking service with an affected mobile phone. This requirement makes clear the responsibility providers have to ensure mobile networks provide access to the emergency call service.” [..] “The amendments to the Determination to be made under section 6(2) are to be determined and commence in full by 1 November 2024.”
Honestly, I'm sick of this industry and wasting my money on them. I'll make do with a new $100 phone from the post office in case I need to make an emergency call. 000 will still work even without a sim.
Except when it can't make any calls because antenna firmware not having the right updates or some bs like that. This industry is a hot mess and I'm about to tap out.