The sooner you become consciously aware of it, the better.
Not to mention that your answer implies that people only do things because of some list of personal criteria -- e.g. that they always take conscious and/or rational decisions.
Wanting to move to a different area for any number of life reasons
Wanting to change to a different career entirely
Need to take time off to deal with a new child, a sick relative, etc.
Finding an opportunity for something you can't offer them, like a chance to start their own company
And about a hundred other things that I couldn't imagine.
His job as a manager doesn't really include making sure your children don't get sick, or convincing you that California weather isn't that nice, or that you don't really want to have the life goal of starting your own company. I'd saying restricting the list to questions that a manager could have an impact on is more valuable than a more generic list that encapsulates everything.
Being fairly compensated and being adequately compensated are two different things. Sometimes you have to pay more than what is "fair" to keep people. Fair is tied to market forces, forces that assume people can/will move between jobs. To stop people from falling prey to market forces and leaving you need to pay them above the going rate, beyond fair.
An extreme example of this is where the fair/market rate is zero, or even below zero. People like interns on film/tv productions are paid nothing, sometimes for years. There are even examples of people paying for the opportunity to work without pay. If you want such people to remain loyal you have to pay them something, which would be more than the fair/market rate of nothing.
For an example of negative market rates in the medical field, see http://thetab.com/uk/uclan/2015/10/04/is-uclan-elitist-1193
"There has also recently been criticism of work experience placements in a private hospital being sold for £500 per week, which would help students improve their applications to study medicine at university."
But such markets are only approximated in practice, and the interesting part of Economics is studying the effects of how actual markets differ from being perfectly free and efficient.
Conditions leading to a shields down moment for someone switching to job that might be preventable by management is pretty well contained by this list. It doesn't account for life goals or circumstances that drive you in a truly different career path.
No, he doesn't. The full list from him includes:
People can answer "YES!" to all of those questions and still leave the job. I've left jobs I was happy at. All sorts of happy people do it all the time. The foundation of the author's essay is flawed.