No need to. It's all hyperbole. Thai Revenue is looking for untaxed money hidden in offshore accounts by wealthy Thais, not expats pension funds already taxed. A lot of fear mongering by "tax experts" touting for business. I won't be conned the way so many people have
I'm talking about applying and obtaining the DTV. The criteria is you need to show 500k baht in a bank account. You can include a tax return from your home country to indicate your remote working income, or alternatively a contract from an employer that you are working.