i'm just saying that as there is no precedent and the laws are new, there is no reason to assume they won't be enforced and the most logical way would be through immigration when extending visas etc. I am very familiar with Thailand and don't often see them turning down free farang money.
it's now mandatory to submit a return if here for more than 180 days a year so pretty much an ideal way of checking this will be through immigration offices surely.