Earlier quoted context omitted.
2 mins for a production deploy of an app with millions of users? Seems fine to me! How fast would you expect it to be?
How does an apps user base affect its build time?
One way to think about it might be that the site supports lots of users who use it for various things. So, everyone uses 80% of the site, but everyone also uses a different portion of the final 20%. So, if you have lots of users, you might also have lots of smaller features that a significant minority use.
I don't know, just an interesting way of thinking about it.