Coming from other side of border but with similar culture and attitudes, corruption is so common in that part of the world that most of the people don’t even see it.
They would consider it smart to game the system.
Only way I can explain this attitude is to compare it tax loopholes in the west. It is very hard for many Americans to see loopholes in tax codes as unethical. Like using mega-backdoor-ira loophole to bypass income limits for contributing to IRA. (Personally, I am not saying that tax loopholes are ethical or unethical, just something that can be seen both ways.)