This is casuistry. Given the state of our border inspections, we depend on (1) the reliability of the exporter, & (2) the importer's own quality standards. Major importers probably do their own inspections too. I don't think hormone use is a human health issue, just animal welfare; AMR certainly is.
We have signed up to the importation of up to 100,000 tons of Australian beef a year, from a farming system routinely dependent on growth hormones and antibiotic use (hard to avoid in inetnsive systems). There _is_ some Australian capacity to produce to higher standards. We'll have to trust them.