@Will ***********
more specifically it seems they previously had an ED visa, in addition to visa exempt, and they couldn’t pass any Thai language skills test. Imo that seems to be the bigger issue- being on an education visa but having no thai language skills to show for it.
Of course there could be even more details that we aren’t aware of that the poster decided not to share- and I’m not trying to accuse them either, it could be just as simple as that, but some people would omit key details.
In their case it does seem like they were on a dodgy education visa with no real intentions of studying.
Besides that I haven’t heard of anyone having to pay a fine, and just a few cases of people being hassled. I think that most DTV holders get in no problem.