the 'room' told Albanese that they wanted a referendum on the matter - so, he promised a referendum
he was elected on the strength of that promise among other issues
he was elected - in a democratic system ---------- he's delivered, nothing complicated about that
and if you want to say - oh, but it's not the majority who elected him --------------- well, better go check with the conservatives - they brought in preferential voting - way back. For the express reason to maintain power without risking any seats
you might like to ask them --------- how's it worked out for you?
if Australia says no ----------- it says no. Albanese has done his part ----------- as promised.