It's true that people who are better trained and more educated are theoretically supposed to be more flexible in the labour market. If they lose their jobs, they can adjust to new conditions and get a new job. Theoretically, it's true, but, in real life, it's not completely true. That has to be highly qualified.
First, workers—let's forget the question of credentialing and the right to practise—who have high-level training also have greater aspirations, and often the host society, for good reasons and not so good reasons, is unable to offer conditions of practice so that their talent is fully used.
Second, we forget that many workers with a more technical profile are also highly flexible people in the labour market. Trades people have always earned a very good living. There has been a shortage of bakers in Quebec for years. If we brought in 200, 300 or 400 bakers a year, they wouldn't go unemployed. You have to be suspicious of certain theoretical concepts.
Honestly, our education system places considerable value on university training in certain respects, to the detriment of technical training and training in the trades. In an economy, we need more mechanics than economists. Nearly 25% of jobs, a maximum of 30%, rely on university skills. So there's no point in arranging for 50% of the immigrants we take in to consist of university graduates.