> If the Australian government released the data it'd be trivial to identify whether these deaths were concentrated in the vaccinated or the unvaccinated, but so far it hasn't released such data (if it even possesses such data in aggregate format).

The ABS releases all manner of aggregate anon data, eg:

https://www.abs.gov.au/articles/measuring-australias-excess-...

The Australian states all have comprehensive medical records that have allowed people such as Prof. Fiona Stanley, an Australian epidemiologist to gain international recognition for their work teasing out relationships in many different medical disorders.

Access to fine grained records is limited to researchers for privacy reasons but the pool of researchers across the country is large enoug to rule out any conspiracy to keep secrets (unless someone is deep down a truther well).

https://en.wikipedia.org/wiki/Fiona_Stanley