I spoke to him and he said he's doing other things.
More seriously, while I don't check every airport every day, with MEL and SYD having about 20 domestic flights each way six days a week (fewer on Saturdays), there isn't a lot to report. On many days, SYD has has four to five international flights each way, and MEL about six. BNE may have a few more domestic flights given the multiplicity of domestic coastal and inland QLD destinations, but it's easy to see how SYD can report a c.98 per cent drop in both forms of travellers for April 2020 compared with April 2019.
As we've said before, anyone who'd suggested this six months ago would have been in danger of instant committal to a mental hospital like Thomas Embling in Fairfield, Victoria. Even our esteemed aviators would have struggled to predict this. Truth can be stranger than fiction.