I think the recommendation is to use a datetime with the timezone explicitly set to utc? I think the numbers vs. objects thing seems like a distraction...
You're free to use numbers instead of the datetime module. In fact you don't have to use any part of the standard library if you don't want to. I don't understand your remarks at all.
If you think UTC means that "time is a number" you are very confused though. UTC has no relation with the UNIX timestamps (and the epoch), though they are both ways to represent a specific point in time.
This, I think, is the idea that will be quietly ignored in the long run.