Silly me! I'm trying to find a pattern when it comes to processing times. You know, some simple logic. But it could be a great many of things. For example insurance, the QR code, country of residence or just how the wind is blowing.
I agree that it is weird that people missed their flight under the Thailand pass scheme. Didn't that website go online on the first of November? So yeah, you wouldn't expect any travellers before 7 working days. I thought that was weird anyway. They allow people to enter under those conditions on the first of November but don't give an option to get a certificate before that date.