Where I live, what you say is true, ansel. Very true.
Not only have these “good jobs” been taken over but you are also correct about the decline in quality. I have experienced that personally, in a work I had contracted to be done at my home.
You should see it intimately over a 40 year period.
How can these people look at the third world construction, unfinished buildings, dirt floors and glass topped walls of Mexico, and think that those people are the ones to replace the American craftsmen of the 1950s and 1960s and 1970s.
Now days I walk into million dollar homes with shabby workmanship, Mexicans don't care, they have never cared, that is why Mexico is the grubby, unfinished place it is.