Just traveled using the pass. I traveled 3 times on the COE and also found it very simple. The longest time I had to wait for both stages to be approved was 3 hours! Took 4 days with less paperwork applying for the pass!
When the requirements for covid insurance first started in Thailand, the Thai immigration began questioning policies that had not been purchased through a Thai company. Rather than any hassle on arrival, its easier just to purchase the policy through Thailand!
Yes, its a available to non thais at 30,000 baht per annum. Been living in Thailand for sometime and I know when I am paying through the nose for products!