If an applicant is declined insurance they can instead show equivalent amount (US$100,000) in assets (property, shares, savings etc) in lieu of insurance.
At this point it's totally true. Any sound advice is from April 1st the entry stamp reverts to 30 days because this date has been published. It may (or may not) be extended but that's a "fingers crossed" strategy, and be that at your own peril!
You can if you're extending the non-O obtained in Australia, but not if you're converting from visa exempt or tourist visa. And you still need to show 12 x 65k transfers
You don't need proof of retirement. Immigration are looking for proof of income. The only way for an Aussie to do this is to transfer 65,000 baht per calendar month from overseas into a Thai bank account. You need minimum 12 of these transfers to qualify for the non-O (over 50) visa.