That lesson is going to serve them well in the workplace.
Teach students that they are entitled to bad behavior, bad work habits, and deadlines? Fuck deadlines
The next generation is going to have a hard time competing in the global workplace against cultures that do enforce reasonable consequences for fucking up.
Many kids are not that lucky. In my experience, the kids (my peers) who were doing drastically badly weren't lazy. They had something else going on - a bad home life, or serious mental health issues.
A small amount of urgency can be helpful, but ideally it should be intrinsic (i.e. someone screaming at you or giving you letter grades is nowhere near as motivating as feeling that you can almost do it) and it's very easy to overshoot.