Just because it is written in the constitution doesn't mean very much.
https://en.wikipedia.org/wiki/Constitution_of_Thailand#:~:text=Siam (today known as Thailand,of absolute monarchy in 1932.&text=Charters have traditionally been temporary instruments%2C promulgated following military coups.
he Constitution of the Kingdom of Thailand (Thai: รัฐธรรมนูญแห่งราชอาณาจักรไทย; RTGS: Ratthathammanun Haeng Ratcha-anachak Thai) provides the basis for the rule of law in Thailand. Since the abolition of the absolute monarchy in 1932, Thailand has had 20 charters or constitutions (as of 2015), an average of one roughly every four years.[1] Many changes followed military coups, reflecting the high degree of political instability in the country. After each successful coup, military regimes abrogated the existing constitution, generally without public consultation.
Constitutions can be amended, rewritten or simply torn up and a new one put in its place.