@John *********
You still don't get my point. Let's say I am a born Thai. I have only thai citizenship as I am thai.
Then later I marry a woman from the US just to get my green card and later get US citizenship.
I get US citizenship on a fake marriage.
Later I enter Thailand on my US passport.
In the meanwhile the US government finds out my marriage is fake and I lose my US citizenship
My US passport I entered Thailand is void.
For now on I only have thai citizenship but I entered on another passport which is no longer legal.
So no extention and nothing for me.
That's why I am certain all the restrictions will not apply to a thai citizen from birth