yes of course. But it doesnβt mean you will pay more tax if there is a tax treaty in place. You still have to declare in Thailand though. I worked in Spain for 5 years - I had to declare in both countries but the tax treaty meant the liabilities offset each other and I never paid 1 penny more than if I was totally UK based.
nothing better to do? There is lots of conflicting content on Google, including some embassy sites saying effective from December 24. Maybe you should try to find something better to do with your time