It's called fashion.
Human generated stuff suffered just as much: "if you are a tech startup your domain MUST be .io or you are not going to be taken seriously"
Case in point: author HN user name is "arshxyz", the profile page shows https://github.com/arshxyz which is 404, but https://github.com/arshzip works and matches submission domain - author forgot to update his profile to the new fashion. An example of the fashionable ".xyz" becoming uncool and being replaced with new coolness ".zip"
This is a good observation. Now I'm curious how much fashion will be based on what models skew toward rather than what memes people latch onto? Also, velocity of change, as in how fast will fashion shift on a dime?