Pretty much.So is your advice “if you are more intelligent than most people get into a field that requires you to use your brains and don’t take a job or career that allows you to be mentally lazy or is a blue collar trade?”
Yes there are some blue collar exceptions. I observed something interesting once when I got a job offer at this manufacturing plant in Los Angeles (I had to decline the offer when I saw the owner curse out some poor employee right in front of me, and then asked me to work 11 hour days for peanuts). The managers and paper pushers in the office were almost all White. There were a few Blacks in support positions such as janitorial or stocking roles. The workers who did the bulk of the mechanical grunt work on the machines, which was strenuous but fairly simple, were mostly Hispanic. However, the technicians operating the state-of-the-art precision machines which require solid math and technical skills... every single one was Asian.Some blue collar jobs require a high degree of specialization and intelligence. Such as underwater welders.
You see many blue collar jobs have already been taken over by Hispanic immigrants. Well their kids are growing up speaking fluent English and with birthright citizenship, so the next batch of jobs threatened is going to be much bigger because the new generation will be more employable. They're also going to want the cushy jobs of the paper pushers in the office. But I'd say those Asian techs aren't going to be replaceable for awhile unless the average Hispanic IQ suddenly jumps up 20 points.