don't ask me ask the people who make posts every day about it , doesn't matter how many times it's explained to do it within 3 days of arrival they still post asking about every day , not just on FB but on all the socials, maybe there new to Thailand and haven't had to fill out a tm6 before
thats what is freaking people out as there hasn't been a paper form for 3-4 years now and none of the questions you need to answer online are asked at immigration now so I'm not sure about it making things quicker as there will still be crazy long queue's