@Henry ********
i think it's more a "once you start you're hooked into doing it" sort of thing, you've said you've never done it and it doesn't cause a problem.
And you're right worst case you are called on it when you apply for their next extension, you pay the 2000baht failure to file on time fine, you file a 90 day report and you get the extension. In your case I wouldn't do ANYTHING until they call you out on it (which they may or may not ever do) 😛