it's a skill, not a fact. skills are learned tacitly through experience; such as riding a bicycle. You have to ride to learn. The problem is that everything has changed so much.
When I started, compiling took serious time (hours sometimes). So you were much more careful about making mistakes. Compilers also had bugs, as did linkers, debuggers, you had to know how to spot these things and when to question your code and when to question your tools.
Operating system containment and protection was more an intention than a reality and it was relatively easy to lock up or crash a machine through faulty code. Workstation uptimes of weeks was seen as impressive. These days, things are so stable that "uptime" just tells me when my last power outage was.
When we released software it was on physical media, which was either mailed to people in physical boxes or running on physical machines that were shipped out. Not making mistakes was much more important in that situation since you couldn't just deploy an update without a lot of cost and ceremony.
It's all changed so fundamentally; I'd be open to having an instruction course where people have to target some vintage machine (which we'd likely have to virtualize) and have them just deal with it for 6 months. I don't know how many signups you'd get though.