I think this is part of the reason that many of the people I work with think I am a jerk. I just expect you to do your job and unfortunately, a lot of them don't or they don't do it competently. Some of them are really easy too. It doesn't take too much to be able to master the skill. They just choose not to for whatever reason.
"I also wonder a lot of times why many people don't have the drive for (self)-optimization. Maybe it is laziness, or perhaps they lack passion for what they do? I honestly don't know. I have, once or twice, asked someone with that behavior. The only answer I get is that they themselves don't know. Since it is a very personal topic, it might only be the diplomatic answer to a somewhat offensive question, no matter how nicely you formulate it.
I definitely agree that is is probably difficult to locate the source of the issue. I would imagine most people get offended if you call them out on it. Whether your intentions are good or bad.
I am not sure either - but I think that short-term gain at long-term cost factors into it.