I feel there are still so many unanswered details which is crazy since we are now in July of the year that these new rules are in affect. How do we act in our best interest on so many unknowns ?
From what I have read, under the tax treaty between Thailand and the U.S., government pensions are not taxable in Thailand. I strongly suggest you consult with a Thai expert to guarantee that is true for your situation.
Thailand gives a 60 day visa exempt with one hand to increase visitors but Taxes expats if residing 180 days or more with the other to discourage longterm visitors. Hmm. How does this make sense ?