Surrey and Brampton are everywhere now(Calgary, Edmonton, etc). Maybe, it isn't the case where you live. But these Canadian born kids of desi immigrants are no different. Even in Calgary, we have AK47 decals on their cars, high number of crimes from them, vote block politics, regressive lifestyles, etc from them. Same for every other major immigrant group.
How many of these do you see pick-up STEM degrees or work beyond contracting jobs? We don't have to agree or disagree on this, but Brampton and Surrey has a large number of these Canadian born kids and I don't see what you are talking about. You are probably only seeing those who moved out of their parent's house and are actually a small percentage of the rest. Most Canadian born desi-kids live in a multi-generational households and are anything but assimilated. They like to pretend they are, but deep down, they aren't. They are slumlords, LMIA sellers, etc. Look up businesses around you from lmiamap.ca, check who owns those businesses and see for yourself.