It does but this is the idea that I think one has to bend or ignore the most since people always bend or ignore bits of agile.

i.e. being able to print "Hello World" and not crash might make something shippable but you wouldn't actually do it.

I think the right amount of "bend" of the concept is to try to keep the product in a testable state as much as possible and even if you're not doing TDD it's good to have some tests before the very end of a big feature. It's also productive to have reviews before completing. So there's value in checking something in even before a user can see any change.

If you don't do this then you end up with huge stories because you're trying to make a user-visible change in every sprint and that can be impossible to do.