Anonymous participant I think it depends. There have been some applicants who never receive additional requests and then there have been applicants who received multiple requests, with each additional request seeming to have nothing to do with the previous request. What embassy did you apply via? Malaysian embassies seem to be the most problematic
Anonymous participant 716 the OP doesn’t have a visa to extend. He/she is there on a 14 day visa exemption (assuming they are from one of the ASEAN countries).
DTV means you are a digital nomad, therefore you do not work in Thailand. Therefore any urgent business meeting would be online, not in person. If you are saying to the embassy you need to return to Thailand for an urgent business meeting, you are putting a red flag on your application
You need to check with the embassy to ensure they actually accept that type of course. Many don’t accept language programs, and yoga too, might not be accepted. Some also want to see that the training is longer than 6 months
Some Thai embassies only allow residents to apply, including South Korea. However, one or two people on this page have stated they were able to do so as a tourist (I can't verify how true that is though). As a tourist, you are not a resident.