Basic economics: you're mostly competing with other people who apply for the same jobs as you. There is not one labor market, there are many, and they are often pretty specialized. You can't substitute a plumber for a lawyer or vice-versa. This is why different jobs pay different wages.

This means it's never going to be all that useful to approach controversial issues like immigration at a high level of abstraction. It affects people differently. The details matter, and yet, here we are, talking in abstractions instead of from experience.

There are few facts here, lost in a sea of stylized summaries and witty exaggeration. Maybe we shouldn't take it too seriously?