If break-in was an issue, it would be controlled by software, not just telling some random buyer don't drive like that or putting it in a 200 pg manual that won't be read. The software is already there too. When you fire it up in the cold, it will limit your RPM. This is a fact and common on cars for a long time now. If they wanted to limit it to certain RPM for certain number of miles, they would program it in.

No sports car or exotic car company would every make a car that had to be broken in so precisely. Every single test drive involves a low mileage car getting redlined. Also, it's pretty much a given that a huge number of buyers will pick their car up and floor it right after leaving the dealer, then they'll call their friend over and give him a ride and floor it.