I mean, the folks who run the tz db definitely know what they're doing, it just never 100% clicked with my thinking.
I always prefer `US/Eastern` over `America/New_York` -- it seems more "canonical" to me. New York is _currently_ the anchor city for ET, but will it always be? The place I live (Boston) is currently on ET, but in the future it might be on Atlantic Time. If there was an `America/Boston`, I would use that to be safe, but since there isn't, it just seems better to be to be specific that I mean "Eastern Time" and not "whatever the time is in NYC"... At least then if Boston switches to a different tz, I could intentionally switch to "Atlantic Time" -- doesn't that make more sense? Versus I guess what I'd have to do, which is switch to `America/Puerto_Rico`? (I had to actually search that one, too bad there's no `US/Atlantic`...)