And all you have is an assumption, a hypothesis, which until you can prove otherwise is nothing but a hypothesis. If Microsoft were to replace your surface based on your hypothesis, with no actual proof, then they set precedent and therefore anyone who has a cracked screen can use your hypothesis, and receive a replacement.
You rather make me question the validity of your hypothesis given your other hypothesis is that if someone writes 2000 posts in a year then they are a microsoft employee.
The funny thing is, on this forum alone there are a number of users who have experienced an unexplained crack in their screen be it the s3 or whatever, and obtained a replacement from microsoft. Maybe if you act humble when raising the issue, they might listen. As opposed to asserting you must be right because you have a background in engineering, you are wrong, I am right. Belligerent customers rarely get real consideration, in any business.