@Mike *****
why don't you get super to pay into your Australian bank account to the lowest income tax bracket l, so you don't need to pay income tax. If you are an Australian retirement age, your super earning is tax on your earning( income stream). Look at the tax threshold income for Thailand, you get it transferred to your Thai bank account from Australia bank account just enough to live and pay the lowest tax. I don't think Australian Super will transfer your money direct to your overseas bank account( I asked this question to the super employee in 2022- the answer is NO.
As an income tax, to my knowledge Thai tax is lower than Australia. However, if your income is very high the tax rate is probably very similar.
Check the rules also in Thai Tax Office website- สรรพากร