Okay. But there is a 90% chance that nothing on that page requires anything chrome-specific, and even if it did, it would probably be a line of code or two to m

Okay. But there is a 90% chance that nothing on that page requires anything chrome-specific, and even if it did, it would probably be a line of code or two to make it degrade gracefully in firefox. It was undoubtedly more work to implement "Sorry, your browser isn't supported" with user agent checking and whatnot than it would have been to support firefox, because in all likelihood, that site would Just Work without any real modifications(modulo styling).