@Sophie ************
the mention of flying in from the "home country" is due to the Thailand 'crackdown' on cybercrime affecting Thailand as a country and foreigners who are either participants or victims of the associated human trafficking. The recent announcement from Thai Immigration, mentioned that if foreigners enter direct from their 'home' country, they're a lot less likely to come under scrutiny. It's not necessary to enter from one's own country, but if entering from another country, there will likely be more questioning about their reasons for travel and entering Thailand.