If a UK (or UK-based) airline did the same thing here, it probably wouldn't help much anyway. Part of the problem that UK airports are experiencing with recruiting new baggage handlers is the amount of time (often many months) that Government agencies are taking to handle security clearances. Just because a senior airline company executive works in their plush London HQ, doesn't mean that they'll be permitted to work 'airside' at an airport. They'd still need to wait months for their security clearance to come through.
It seems that the Aussies are somewhat better at such things!
(There could also be complications here in the UK because the baggage handlers and check-in staff aren't usually employed by the airline whose bags they're shifting. Staff wearing the uniforms of easyJet, Ryanair, British Airways, etc - together with their baggage handlers - are far more likely to actually be employed by firms like Swissport and Menzies Aviation)