I suspect he means 2001 rather than 2011 since they were stopping shipments and requiring fungicide treatments at least as far back as 2003. 2001 would also coincide with more or less when the alarm went out about daylily rust spreading in the USA and being shipped to other countries. 2011 would be eleven years after the rust was discovered in North America so that would really be shutting the stable door after the horse has bolted.
I wonder if the chances, or not, of the packs getting through without it depends on which port of entry they arrive at? I've no idea how the mail system in Australia works. I do seem to recall that, in one or two cases where there was a problem, what may have attracted attention to the packs in the first place was that the parent plants' names that were given did not match their labeling requirements.