The actual employees themselves don't "know all about it"; they're just following the boss's orders---who himself is prolly a college intern or new-hire mgt trainee.
And there are managers who were never rules-trained or worked in specific areas such as a shop that does a dedicated task. I once observed a local with a car in tow with sliding wheels. Sparks were just flying! I rushed in to tell this boss to QUICK!
TELL THE TOWER TO STOP THAT TRAIN! (This was prior to us getting multi-channel radios). He told ME to worry about my "own' work and not to worry about what that train was doing! More than once, this non-op supervisor had violated the rules because he simply did not KNOW that ANY employee was obligated to tell of any defect or problem occurring on the RoW. But I had just bid back in from the Transportation Dept where i was still rules-qualified and I knew that if I said nothing and there was a derailment, there would be questions as to why I had not said something to stop the train. I went around the guy to another phone and called the Yardmaster and told him. Eventually, we got multi-channel radios and even the shop forces got- if not the whole rules exam- an orientation course and familiarization that included train operations, Blue Flag Rules, fork lift and heavy equipment operation rules as well as an Operating Rule Book for each employee even if he did not have to take the exam. It was the Blue Flag rules that caused an "incident" at the shops that brought this on and they thought, "Hmmm, maybe we better do something about this!"
The same supervisor who had ONLY worked in the Stores Dept had also chastised me for pointing out a Blue Flag discrepancy previously, not even realizing that this was a VERY dangerous situation that could get somebody hurt. He (or somebody else) had a blue flag removed at the end of our yard (why, I don't know) while workers were working on
equipment flats farther down in the yard! The switch engine came in with a cut and shoved in that track since there was no blue flag protection!
Luckily, someone saw it and signed the move down in time!
It is VERY important to know what you are doing, and very annoying, as was said, when you are out on the landing handing up orders in 15 degree WX, and there's some dork out there telling you that what you are doing is "wrong"!
Been there and done THAT, too!