Sorry but the reality is that basically every thing you are promoting is completely incorrect or, at best, incomplete.
I am sure you did make a career out of selling hokum mixed with bunk and a side order of poppycock. Lots of people do.
Dude, try sell your allegedly maintainable 1990s c++ code these days.
My later career was in the main buying “hokum mixed with bunk”. Or rather, doing my best not to.
Been there, done that, over and over. The tech (even for very conservative DAQ/SCADA) is vastly different from 10 years ago.