The guy in charge of letting people in to one of the most prestigious universities in America is overworked? The hell you say! (That's supposed to be read as friendly, not actually incredulous)
For real, it's not like job applications where a lot of folks just cut the pile in half and toss them, then cut it in half again and toss them (yeah, I've seen managers do that for jobs with high application rates). They've got folks going through just checking that the admission was properly submitted, another layer making sure the people who properly submitted are qualified, then they're weighted to toss out any that fall below a certain percentage of qualification. Then the dean makes decisions. And they're still probably way overworked.
Something like this got tossed out by the lowest possible level and that person wouldn't even have the authority to write anything except a standard form letter that gets signed with an autopen.
It's an entertaining fake, but definitely a fake.
A couple of things. First, things change. Even in places where it doesn't feel like things change, they do. So if you leave a place and come back it will be different.
More importantly, we don't look at an objective past. Our minds remember the best and the worst. So when you get older you remember "the good old days". Those days, objectively never really existed. They were just days. So when you're 40 you won't be able to recreate the magic of being 21, or that feeling you had when you went home and someone was cooking your favorite meal, or go back to your hometown and feel the way you did when you and your buddies hung out.
I'm probably explaining it poorly, but it boils down to nostalgia being a hell of a drug. You never know when you're living in the good old days until they're gone.
Luckily it works in reverse to an extent. If you had a really shitty childhood, you can look back on it and say "at least it's not like that anymore!" The psychological damage is already done, but you're not coming home to an alcoholic berating you or heading to school to a teacher beating your ass ever day.
You can never go home again, both because things have changed and because that place only ever existed in memory, and the real world was some amount (generally GREATLY) different than what we remember.