Well after reading all these comments its quite clear health insurance in Thailand is a very debatable topic, self insurance seems the best way forward, of course you should always look after you own individual health.
Restrict you beer and crap food intake, also exercise regularly,
When l move permanently to Thailand 🇹🇠l will have 0ne Million baht in my Bangkok bank for self insurance, plus a credit card with a £8000 credit limit, which should l hope cover most medical emergencies, and yes l know people will say you need more but it's a chance you take. All insurance agents are on a very nice commission to get you monies.
The new tax rules are in place now 2024 (1st January 31st December) apparently so people who stay longer than six months must declare all foreign sourced income.
You need to see an accountant in Pattaya, they seem to be clued up on this question, as no ferang in pattaya has actually gone through the new tax arrangements for foreign sourced income.