Mate very easy apply on Thai embassy web site evisa send them everything they ask for, don’t worry about making a mistake they will come back to you and ask for any missing or extra information they need, easy and straightforward, you should get it within 2 weeks
I applied a couple of years ago in the uk 5 days, I applied in Chang Mai for my sons first uk passport 7 days, they are very fast, I understand Christmas is coming so could take longer
He needs to apply for a non o in the US, using the Thai Embassy evisa site, you will be asked for information bank statements proof of address passport size photo etc it’s quite simple once you get started
She said in the article I read that she had entered Thailand many times, so maybe not just enough money, but an excuse to stop someone they don’t want in the kingdom
why I never have more than a few thousand baht when I go through immigration, I don’t like carrying cash, it’s not stupidity it’s sensible, if it’s stolen it’s gone for good, I keep mine in the bank.