I haven’t actually yet seen a post or comment form anyone on any of the pages I’m member of that says they missed their flight or deadline. Many that were close.
A few from people that tested positive and had to reschedule but none that I recall that were a result of the eVisa or Thai Pass system.
as it turns out that doesn’t work. You can submit your to two applications and you can use any email addresses on either but the number of applications you can submit is limited to two and seems to be linked to your passport number and not the email address.