Really, a 475-foot homer isn't necessarily a stop-the-world event. They happen a few times in every season. It was the way it looked, dang it. The trajectory and where it landed. It was, aesthetically, the best homer of the year, and I'm not sure if it will be topped.
Here's how it looks after StatCast got its nodes on it:
Still pretty, but now we understand it just a little bit more.