No need to apologise.
This is more a general, philosophical comment, rather than being directed at you.
I just think that the initial premise of Australia Day was to celebrate the establishment of the first European settlement in Australia. In practice, that's not really what people celebrate. No one is getting out their Arthur Phillip paintings and hailing him as our founder, but that is the reason stated for the offense.
Do we really think changing the date to the 27th will stop people being offended? They are offended at what is being celebrated, or the perception of what is being celebrated, rather than the date I would imagine.
It's unlikely a date change would mean the offense would stop altogether and I think therin lies the problem.
Many are drawing a line in the sand on certain things, because they feel that conceding to the smaller request, will ultimately lead to more and more concessions until nothing is left to concede.
It's a well documented Marxist/Communist political strategy..."Revolution in Permanence". The elephant is eaten piece by piece. The initial request bears no resemblence to the end goal. It is just a task on the path the ultimate objective. This is done in permanence. Keep getting more, no matter how many concessions you receive until you gain ultimate power.
I remember when these activist groups were saying "all we want is an apology so we can heal". Has anything changed? The activism continues, the offense continues and the requests for concessions continue.