I'm a cadet and I can see why cadets make GA pilots angry.
The way I see it is that there is a sense of entitlement because you've slogged it out in the bush and now its your turn to fly big jets. These cadets come in "off the street" and are living the dream. Through my course there were cadets that were some of the smartest people I know that can fly and others that failed multiple CPL exams and flying tests.
Good Luck to both the cadets and GA pilots, there is nothing we can do to stop this, so lets embrace it and allow everyone a fair chance to enjoy the profession that I love so much.
Peace
