You mention the exceptions, especially the people who do a visa run. How many Cambodians do you think apply for DTV? I mention just normal plain situations of remote workers having a company contract and allowance to work remotely. Normally this will not give a lot of extra questions. When you have the money and not just get it transferred to your account for the visa it does not matter if they ask for more months. And it does not really matter if it takes 2 days or 4 weeks. When you plan to travel to a country, you need to prepare, and apply for a visa is just one of the preparations.
It is indeed simple and fast as long as you comply to requirements, and just apply in your own country before you travel to Thailand. The difficulties start with the applicants using visa runs to get the visa and finding reasons to apply for the visa.
Applying for a visa does not take much time, less than half an hour, and when you fill in correctly, an comply with requirements, you don't lose money, and for somebody easy spending over $
Maybe I try just do by registered mail next time, but you asked to show an official asking to say it has to be in person, and I just showed you.
No idea if the online system is making difference for regions.
I not have to choose an office online, but the system might do depending on address of course.
Anyway I did go to the office, the desk employee looked at my passport and documents and asked if I need extension, so she did not look very well when I still have over 90 days on my stamp and hand over a TM47 and TM30.
I said I wanted to do 90 day reporting, she took documents, no further questions and within 3 minutes another officer handed me over my passport and a TM47 receipt.
That would be OK I think, I cannot expect non bussiness cannot be paid cash and with 3 percent extra charged it is even cheaper to pay high ATM fees if you have no other option.
But in the situation of the opening post when you can only pay by QR it might be handy.