It becomes more of an issue when you have multiple people playing from the same IP address. Everyone gets unfairly lumped together.
Just like paying for a friends account, who doesn't even live in the same state got both accounts banned because the billing info matched.
So removing a warning you should not have gotten can matter.
Its also like saying they will drop your first speeding ticket in court, when you were not speeding in the first place. Sure it 'doesn't matter' because you got out of it, except that it does.
This was a long time ago, the OP just reminded me of the whole thing, and got me all riled up about it.