Shaming? Really? If your defense of your procedure is “nothing bad happened” - then, you need to re-examine what you’re doing.
“Nothing bad happened when I did this” is a classic error across many disciplines and it leads to complacency, and to eventual mishaps, like the space shuttle.
There are four levels of professionalism, according to Tony Holmes, an analyst, author, PhD and former fighter pilot.
Level 1 - You get a paycheck for doing the work.
Level 2 - You get paid and are in full compliance with all regulations, policies and procedures while doing the work.
Level 3 - You are in full compliance and actively seek out new training and ways to improve your performance.
Level 4 - You seek out improvement in your self and in others, to elevate their performance.
So, I am arguing that a mechanic should at least be a level 2. Full compliance. If you board an airplane, you would want the pilot to be a level four - actively seeking to improve the performance of the cockpit team. And if you’re laying on the operating table and a surgeon is about to reattach parts of your body, you would hope they are a level four, a doctor who seeks to improvise their profession.
The only people who are feeling shame are operating at level one - getting a paycheck, but not in full compliance.
“I’m a level one, and I am good enough. My method is good enough.” Perhaps with a dollop of “I know more than the engineers that specified this” served on top of that statement. Not exactly a strong argument.
“Nothing bad happened”. “It’s close enough.” Two excuses that will get you in great trouble in many professions, particularly the military. No drill instructor, first sergeant, or commanding officer would ever accept such sloppy work. No SEAL about to jump out of an airplane next to you would accept that excuse, either.
All the recent aircraft crashes were, yeah, you guessed it, level 1 professionals. They got paychecks, they did the job, but they failed to comply with procedures, policies and regulations.
I’m sure that “nothing bad happened” when they previously failed to be in full compliance with airspace rules, or company policies on stable approach.
Nothing bad happened - until it did. The difference, of course, is that those pilots were in the mid air collision, and evacuating from the rolled over airplane in Toronto, while a mechanic that fails to comply with procedures sends the result of his work on to other people.
What shocks me about this discussion is the number of people making the “good enough” argument. The number of people who operate at level 1 - and think that anyone advocating for higher standards is the one in error.