I agree if the issue is critical that you want to get the fix out as soon as you can. I also agree with you that we don't really know the full background here, but I am concerned when this is being held up as a good way for a company to behave.

I can only speak for myself, but I never push any non-critical changes out on a customer facing application in less than a day. I like to think about what I have done overnight just to make sure I am not breaking something. Even doing this I have still managed to break things on occasion :)