yes, I am aware of the theories on motors, and also some of the arguments.
I got into a lot of that stuff when I was maintaining some electric cranes that use DC Mag Amp systems essentially based on loosely on submarine drive controls and coupled with AC motors....
The argument were over the Fields and how they were able to modify the AC waveforms to control the motor speeds and torque.
At the time, we really did not have all the answers on how the interactions worked, but they did. Fun to argue at times...
And then there is the hole theory with silicon transistors. Something we have used for 70 or more years, yet the theorists were still arguing whether the electron came out of the hole or went into it, or something to that effect.....LOL... it is just anecdotal to understanding gravity.
Anyway, my primary questions are focused on gravity and mass and all that it entails, and not electromagnetism, which we understand well as you said, yet in some areas of the physics, we still have heated arguments, or at least did about 8 years ago when I retired.
What we do know, is that we don't know a lot, and new questions are arising frequently.
It's certainly no disgrace if electricians don't understand the modern theory, because it's just not relevant to what they do. The fact that circuit diagrams represent current as flowing in the opposite direction to that in which electrons actually drift makes no difference to making the motors run and the lights go on.
As for gravity, what this result shows is that Einstein's nearly 100-year-old theory of gravity still works perfectly well. Some people thought that certain discrepancies in astrophysical measurements were showing us that Einstein's theory was wrong, but it turns out that the matter isn't what (or where!) we thought it was. The theory was making the correct predictions all along.