In my impression of Google products (Gmail is a notable example), the company has been more on the "stagnation" side and less on the "innovation" side already.
Gmail is basically synonymous with email today, and no one wants to use email now. What does that really say about Gmail, then? Never mind the fact that they pretty much killed off non-Google mail servers.
In my opinion, HN is better off. You have a good underlying point (that Inbox was exactly what GP wanted), but why write it that way?
It's certainly not still funny after the 1000th (or even 2nd) time reading it, and it's harder to understand for people who aren't in on the joke or speak English as a second language.
Thank you for having an open mind.