You're almost correct but in this case they are suspending shipments for over $800, not under. This doesn't appear to be caused by any changes to the de minimis rules, but rather the rules for the tier after de minimis
And what an odd comment to use a throwaway for...
> And what an odd comment to use a throwaway for...
Certain people seem to use throwaways for every comment or spree of comments.
Those people are breaking the site guidelines:
> Throwaway accounts are ok for sensitive information, but please don't create accounts routinely. HN is a community—users should have an identity that others can relate to.