The captain of the first fleet, and governor of the first colony, fought for this against Lord Howe of the Admiralty before the fleet had left England.
Besides, in the same period we were a 'penal colony', the Americans were 'slavers' - so much for not casting the first stone...
I didn't write, imply or say at all that every person from day one until now was a prisoner obviously not but I figured the subject would be viewed differently in Australia.
Besides, I didn't say that all americans were slavers. That's not the point I'm making. Your 'considering Australia's history' comment isn't "viewed differently in Australia", it's just flat-out wrong. It's servicing a bigoted stereotype ("people from X are Y, dontcha know") rather than reflecting history.
In any case, Australia was federated on Jan 1 1901 - that's when the constitution describing this came into play - a full half-century after the end of the penal colony years, in itself a period of immense immigration. Considering this history, why is it odd that people convicted of a lengthy sentence be barred from holding high office?
I guess we're both guilty of being ignorant of distant lands.
That seems a bit odd considering Australia's history doesn't it?