that’s why they made the SHA++ there was an article the Bangkok post did about some of these hotels not selling the right package and causing problems, good luck with resolution
most of the TP anxiety comes the most of the US not having a QR code on the vaccine passports and therefore impossible to receive automated approval and needed to be manually approved.
I’ve only seen 1-2 posts about visa/TP denial from insurance, and even then it was usually user error. As stated my company gave me a specific thailand cover letter and I had no issues.
I think many people simply do not bother to look or know what the options and costs are, I paid $190 for 5 months of coverage that came with a Thailand specific visa cover letter so I had no issues with visa or TP