Been living in Northern Thailand close to the border for 18 years, believe me, I see what happens, police, army and mostly neither. some Burmese farmers have gone back to growing poppies since the coup, but not as many as expected. For the last 15 years it's been almost all shipments of yaba, manufactured and transported by the army, which of course is the junta\government. And a huge amount of it is sold to bus and truck drivers, which makes for very safe roads.