While other nearby countries may have same-sex marriage (Taiwan) or limited legal recognition (e.g. China, Japan, and Vietnam), they tend to not be as open to LGBTQ people as Thailand, especially in their culture. What is the historical basis behind relative Thai openness to LGBTQ people?
/u/sunagainstgold and /u/swagberg have previously answered Transvestism and especially "Ladyboys" are strongly associated with South-East and East Asian culture and cities like Bangkok and Tokyo. When did this trope start and how old is it?