I think you'll find the DTV is here to stay! The Thai government is still pushing the "soft power" agenda. It seems to be only a few salty expats who are casting doom and gloom! Meanwhile a friend of mine just got a five year visa by providing five dental appointments! What a cackle! Loving it!
Anyone can legally move to Thailand, marriage is not one of the requirements. Plenty of single guys legally move here because they enjoy the company of many women, not just one 😆
Sure - even though you cannot produce one single official reference to 90 days. You can believe whatever you want, that's your prerogative. I'll stick with the LAW