I agree with you, however outside the AFF bubble, I think a lot of people will think differently. I think a lot of the people would take this as a "role model" doing the wrong thing going not only by going overseas and not taking "sensible precautions" whilst over there doesn't mean that others should be allowed to go and do it too.Not so much that the PM 'shouldn't go - I think one of the comments was that Aussies can't go overseas because it is too unsafe... that we will catch covid. Yet there's the PM, no mask, no social distancing. So how can it be unsafe?
The argument is not that we will all catch COVID but that some will and if 0.1% of those heading overseas catch it and bring it back, that's 1 in a 1000 chance and if some of those spread it to others in a quarantine hotel it could leak back into the community and we could end up in lockdown again, or maybe people get hospitalised and die.
I think the risk level is acceptable now (or at the very least by the end of the year) to let vaccinated travellers go to the UK and home quarantine on return, but clearly those in charge disagree.