This is the best take, IMO.

Different strokes for different folks, but frankly managers don't care if a deadline greatly encourages or greatly stresses their ICs. Either way, it's a way to hold people accountable for a deliverable at a certain date, or at the very least an update why it was missed.

Not having deadlines requires much more nuance to ensure a team delivers work consistently, and unfortunately nuance in work management doesn't report well