in my company we actually do estimate work and many people are so bad at it. however we learned from that and our trainees need to track how much time they spend on issues and then we talk about that after two weeks, so they get an understanding why something takes x or y and they can learn to estimate work.

estimates do not need to be perfect, but we encourage everybody to estimate more time that they think instead of less. so for the estimate they need to think about the problem and do not code like monkeys without any kind of plan on how to fix the specific problem/task.