Laos is one of the most corrupt places on Earth, that money most definitely does not go into infrastructure, it goes into several government officials pockets.
I don't feel that way, Thailand is nice for part, even half of the year but come the European spring, I want to be back in Europe enjoying spring and then the onset of the long summer days. Thailand is also a mess - there are oasis of beauty but between them it's usually an uncontrolled mess - litter, no zoning, no maintenance, poor roads, soi dogs! So again it's nice to get back to order. That said Europe now is a regulatory nightmare, so in the future I may well leave but I still wouldn't spend all year in Thailand.
He's 4, was born in Thailand in fact. His mother is Lao but grandfather is Thai. long-term I suppose he can get a Thai passport but I just need something for six months right now.