Ummmmmm, yeah it matters.
Failure to do a proper break in can cause:
Engine to seize up which WILL result in a nasty crash;
Excessive oil burning;
Poor mileage and power;
and most importantly, WILL void the warranty on a new bike.
And yes, they CAN tell if a bike was over-revved and not broken in properly.
If you are not responsible enough to follow a simple break-in procedure, odds are you are not ready to own a bike.
Think about it.
I have come to terms with the possibility of dying while riding, life has a 100% death rate. I would rather live having fun and end up dead in a motorcycle crash than never do anything fun because it's dangerous and I might get killed. No one makes it out alive anyway. - From a friend on another forum, used with his permission.