Since you appear to have a horse in this race, my advice is to keep your mind open to the benefits that Iran gets, every time he turns a former friend of the U.S. into a Nonaligned nation state.
The point is that regardless of the fact that this government had institutional problems, the cure is a no confidence vote and a new election, not the appointment of a KING.
The domino's keep falling and nobody sees the connections.
Follow the money.......
Under the former Prime Minister (I love how that sounds) Thailand had better relations with China than with the US. Sondhi has much stronger ties with the US than the former Prime Minister ever had. Sondhi volunteered to fight on the ground next to US troops in Vietnam. That counts for a lot in my book.
The point is that regardless of the fact that this government had institutional problems, the cure is a no confidence vote and a new election, not the appointment of a KING.
The King in Thailand is hereditary, not appointed. They tried a no confidence vote and a new election a few months ago. It didn't work and that is what led to the current situation.
I do believe these folks have had a king for kind of a while now.