this has nothing to do with "this is gaf". It's not just "pay your taxes you freeloader" shit. It can be of consequence to the person 'importing' the macbook, too ...
Imagine you're an aspiring lawyer or judge and you read this shit and are like "hey that's a fun way to save money, and a funny little adventure".
You might just have ruined your career, because you've committed a felony. (My friend's a notary public. In law school they were told 'there are no 'trivial offenses' when you're striving for a law career. They singled out the customs declaration issue in particular, because there have been instances where people lost their licenses for that shit).
So we just want someone to be aware of the fact that a component of what makes it cheaper is the european tax you're evading.
Depending on who you are (or what you're aspiring to be), the (albeit low) risks might actually outweigh the reward.