The immigration officer is the first line in that legal argument. You may convince them you are a tourist and they may let you in or you may not convince them and they determine not to grant the VE because they have formed a view that you aren’t a tourist.
This is literally how law works. “Legally in writing” and all.
The 60 day exemption is for tourists. Which is a defined term. Someone who enters Thailand with the intention of not leaving and endlessly returning on similar back to back entries isn’t a tourist.
Feel free to challenge this in a Thailand court and prove that it’s not “legally in writing”.
20 years living/visiting/working in Thailand and never actually asked a single question on arrival including 5 times this year on exemptions.
Maybe there is a system or some basic parameters they look at and, as has been the case at different points over the 20 years, we are in a period of cracking down on excessive BS.
As an aside paid border runs have always been a risk as they are driven by the same system that sees one pay an on the spot fine to a copper.
The answer to “how long you can stay on a visa exempt” has always been the same. Almost everyone who has done back to back to back visa exempts, who isn’t a dribbling idiot, knows that they are not really tourists and from time to time they’ll be challenged.
if it’s only his second trip to Thailand then he’s super unlucky. It sounds like he’s flown back in after a brief trip outside, a border run, then presumably he hasn’t had forward flights. To immigration this might sound like a dude trying to game the system. If a genuine tourist just get a multiple entry tourist visa. If trying to game the system then maybe immigration has a point?
And again, it’s not a convenient tech solution. It’s a crap one. Instead if singing it’s praises and calling others tech Neanderthals you should probably engage with actual decent tech solutions.