I think the problem you're running into is that your definition of "low wage" isn't in reference to their applied fields. I don't think it's right to assume that people are going to compare a pilot's low wage to someone doing manual labor.

The point he is making is that corporations aren't hiring people under h1b because there's a lack of skilled labour. They're hiring people under h1b because they help drive down labour costs, or they don't want to absorb the cost of training new skilled labour.

If it were really because there was a lack of skilled labour, and demand was so high, then there shouldn't be a gap in pay between H1b and local skilled labour. If we want the best and brightest from everywhere, why are we paying the best and brightest lower than the industry standard?