That comment is made from sour grapes. If some bits of Heroku seem to be up, but not others, it could be because those bits are running older versions of the i

That comment is made from sour grapes. If some bits of Heroku seem to be up, but not others, it could be because those bits are running older versions of the infrastructure. Or are being used as test beds for newer versions of the infrastructure. Or are deliberately running on a separate platform so that, when the main Heroku infrastructure starts having problems, other bits of Heroku's domain are still around to dispense advice on how to work around those problems. (The most extreme example is a company's "status" subdomain, which ideally should be hosted on a completely different server, in a completely different datacenter, on a different continent located on a distant planet with different DNS regulations.)