You don't actually transfer your pension, it can still be paid into an Australian bank account (I use St George Bank for mine). You then do a manual transfer of 65,000 baht each month into your Thai account. However, you must already have 12 monthly payments before you can apply for the visa, which is why I suggest to Aussies to first get the OA visa from Australia (where you use funds in Australia as proof). The OA can effectively give you two years in Thailand (with one border bounce). During this two year period, you can commence the monthly 65,000 baht transfers, so by the end of your second year, you will have sufficient proof in order to get the O visa in Thailand
If you're over 50 probably better to get a non-O rather than an ED if you wish to study. Haven't heard about it becoming unavailable, certainly hasn't been announced through Thai immigration
There's no written 180 day rule, and there is no rule for a RETURN ticket. Your airline might ask for an ONWARD ticket out of the country - you will need to check with the airline you are flying with. How long were you in Thailand on covid extensions is more the question to consider.
Has anyone actually produced the official document from the MFA when entering Thailand? No I didn't think so. Anyway you said "Bye" three messages ago and still arguing the point. Don't argue with me. I don't give a rat's ass about Myanmar. I just showed the official document
I'm not from Myanmar. I was trying to help out the OP with official proof that Myanmar citizens are now entitled to 45 days and have provided the necessary links which shows I am correct.