If each Ivy got 40k apps, times 8 that’s 320,000, not 2 million. But the point stands that there’s no time to try to overinterpret a blah letter. It’s also important to choose writers from the right disciplines.
The letter should somewhat match how the kid presented himself in the rest. In that respect, calling a kid Janie when she’s Susie isn’t as bad as regaling about Janie’s attributes and successes and losing who Susie really is.