That doesn't mean your plumber isn't qualified—just that people looking for webapps want to hire workers who know how to make them.
There is the other side plenty of workers successful at programming language could be trained to fill any gap. That's what happened in the 50s and 60s..
Yes the job market exists.
>The facts show that just like the amount of labor is not fixed, neither is the size of the economy (fixed pie fallacy) and as more work is done, the economy grows
Your reply is a glib thought-terminating cliche strawman that doesn't address their point at all. Interesting!
This might be less true if there is resource starvation but we have transport and imports and exports. You can accomodate more people and feed them.
