Could that possibly be because you dont live in Thailand Richard--- How many Thai's do you get to speak to at the seas-side in the UK.
Just under a Million a month---that was in the Pandemic era--so more now----"As of March 2021, there were around 818.77 thousand regional train passengers in Thailand. In that same month, most of the passengers traveled via third class regional trains, amounting to around 714.76 thousand."
https://www.statista.com/statistics/1275336/thailand-regional-train-passenger-volume/