I used to live in Thailand for a number of years. I know very well how professional the Thai army is, they are very professional when it comes to killing protesters or Cambodians sneaking through the border looking for work, other than that, they are useless.
Even tiny Laos repelled a Thai invasion. The Cambodians are actually better soldiers even that they hardly have any hardware.
They are a joke, totally corrupted. The aircraft carrier that doesn't have any aircraft is used as a public attraction, like a museum for people to visit.
I used to have a friend in Thailand, former US army, he was doing maintenance work for American equipment in the Thai army, he had lots of horror stories to say about them.
Now they are going to buy chinese submarines so that they can say "we have them too", never mind that the gulf of Thailand is no more than 50-60 meters deep.