I think partly xenophobia in certain quarters, sadly, though LOS is not unique in this respect.
And also perhaps envy. Both of our lifestyles and perceived riches. In comparison to them we are fabulously rich, and even most of the less well off among us 'live the dream' most Thais cannot even aspire to. I can remember the darkness and anger that befell the IO's face as she saw my pension statement as I went through the process. It's probably many times her (official) income as an Immi Captain.
And how they threw stones in my way and even asked outright for a 5 figure bribe to sort problems they themselves had raised. I skirted round it all and simply did the footwork that was obviously being required, even though it is nowhere stated in the requirements IB itself puts out.
If Hakporn is serious that's where he has to start. With his own. Or in my case at least it'll be good guy out, bad guys can stay. I'm neither on the run from my home country, nor am I addicted to sex with barely articulate rice farmers' daughters. I first came here 20 years ago and have been in love with and a friend of the country and some people here since then.
But if he insists, then OK, I have a good life back home as well.