Is the end goal of life a high salary?
I understand his advice, if followed, and if you work your way, either through trade school or apprenticeship, to journeyman, and then to master, you can expect a $80K+ a year income.
Is this the end-all, be-all of human existence?
A high salary is not why I went into the sciences - I went in with a passion for knowledge and knowing how things work, and why, and how to build things that, because they were barely within the boundaries of the rules, did amazing and astonishing things. A high salary resulted because I was successful at pursuing this passion.
I would instead advise people to try to find three things for which they feel passion, and are good at, and then find someone willing to pay you to do one of them.
If you can only find one thing for which you have passion, if you can still find someone to pay you to do it, then you are ahead of the game, compared to what Bloomberg suggest, if it happens that none of your objects of passion include plumbing.
There are plenty of people who look at the top end paychecks available in a profession, and choose a profession on that basis. Those who do will never reach the top end of that pay range if they do not posses a passion for the profession; they will always be middle tier, and they will watch the clock until it is time to check out from their job, and "get back to their 'real' life". This is where a lot of unemployed IT "professionals" come from.
For those clock watching 8 hours of their day, they will be miserable, working at something for which they have no passion, having intentionally turned their soul off for those eight hours in exchange for money. They will sell half their waking life into misery to benefit the other half of their waking life. And at the end of the day in their "real life", they will find they can not take joy in their "real life", as they anticipate, after sleeping, returning to their job for the next 8 soulless hours of work.
Do something you love, and for which you have passion; reclaim your soul for those lost 8 hours of your life.
I have done different things in my career, some of which interests me, and some which did not. Doing "something I love" has not really helped me live a pleasant life and sleep well at night. The main drivers for me are more like:
1. Job is important and has an impact on someone or some thing. There is a purpose which makes me feel needed.
2. Job has progress milestones which are achievable with some work. A job with no noticeable progress is miserable monotony. Likewise, a job with unachievable goals is frustrating.
3. Job has the right mix of travel, hands-on work, desk work, etc for ME.
4. Boss who is fair, sets clear expectations, and is interested in having a "rising tide lift all boats".
5. Being financially secure. This includes good health insurance. I sleep a lot better at night now that my income is significantly more than my needs. I can worry about the things that matter and not the fluctuations in my bank account.
The first 4 have been proven over and over in psychology studies to make people happier. Doing "something you love" means that I make my hobbies into a job. It is a good way to become sick of both and then be miserable.