The real message of this blog post is that Stripe's revealed and stated preferences are not aligned. Their stated preference is that they sell to literally anybody. The revealed preference is that they prioritize relationships that facilitate growth over that stated preference.
It's totally rational on their part. They're actively serving the big market, and writing a blog post about how sorry they are that they're ignoring the tiny market. That's the right division of effort, and it's smart too, because many members of the tiny market will (naively) believe Stripe's stated preferences; even though absolutely all evidence is that Stripe wants, more than anything, to build a big, legal, US-based business. And that's fine.