Spot on.
As foreigners, we have no rights here. That retirement visa / extension is nothing more than a 12 month tourist visa.
As I said before, the Thai government says" jump" and foreigners ask "how high?"
We'll pay what they say we have to pay, right or wrong, and if we don't like it, either leave, or only stay 179 days in Thailand in the future.
I'm staying this year, and they will get me for this year, if they do, Thailand will get me once. That's the chance I am giving them.
If I feel it's a rip off, it's Thailand 179 days, Vietnam for the rest of the year, with a few days in Singapore for the F1 to be under the resident for tax purposes days for both countries.
Thailand is an unstable country, and I have never trusted the government or those in authority here, ever.