This sign seems to be specifically in front of the government office, the sign with detailed/specific dress codes is in front of every immigration office, thats where most foreigners need to go to. I haven‘t seen the government office since I live here, don‘t know who has to go there.
It would be better if you would explane that the tax rates are progressive. That means if you transfer about 2 mio thb in a tax year in total the deductions and due to progressive accounting results in about 15%-20% tax at the end. for retirees >65 even less.
I‘m not sure if a retiree does have to spend over 4‘000 US $ every month for living here in Thailand 😉
These are not Salengs and if they are not used/registered officially for public transport like taxis or tuktuks at DLT they don‘t even get plates and then not insured 🤷🏻♀️
Depends on lot of individual situations for retirees, age, sort of pension, country of origin, family status and so much more. Nobody can tell whats going to be implemented at all, not even tax experts know the answer