Good. Someone is thinking.
For foreigners, any levies on (historically) tax-free transfers of funds to Thailand from overseas could be significant enough for many of them to decide to relocate, or bring a lot less foreign currency into Thailand, if they can do that. This tax issue seems not final, as yet, but if this interpretation of the law is used then it will very likely cost more to apply than it actually brings in. In that case it's lose-lose.