Uh, yeah they are. If I start a 60 hour (estimated) story the week before the sprint ends, I'm going to have some very pointed questions how thoroughly we want to test this new feature, and perhaps argue that it should be pushed into next sprint. Knowing how to formulate such issues to my management is a very typical part of my job.

If you work at a place where devs are just code monkeys who implement the orders from on high with no feedback whatsoever or avenue for pushback... get a better job.