so what about the PR holders you mention, they're also foreigners, aren't they? So in theory, they would also need to file the form, and be able to choose Thailand.
since my first visit to Thailand (August 2024). Some days they instruct people to use the e-gates, some days don't. But I think the plan is to use the e-gates only in the near future. That's why in my passport I have some exit stamps (but more entry stamps).
Sometimes they ask for something you've already given to them. Then, just give it again. I have an application ongoing for my mom. They asked as additional documents something that was already given, the only thing they added was "all in one single PDF*". I just did like they asked, now waiting.
* they're not on the same subject, so on the original form each PDF was uploaded on its respective category.
poor planing yes, as he should have alloted more time but there was a need to book the flight, as many embassies do require you to show it. At least in my case it was like that. Of course one could just upload any random fake flight, but I wouldn't feel doing that on a visa application.