Since time immemorial, laptops have been able to show the expected battery time remaining based on the current usage profile. This is well understood by users and useful in order to gauge how they are using their systems (and adjust accordingly).
The removal of the battery life indicator from the latest build of macOS Sierra is a bug. The explanation from Apple (https://9to5mac.com/2016/12/13/why-apple-is-removing-time-remaining-battery-life-estimates-macbook-pro/) is pure flim-flammery, showing nothing but contempt for the intelligence of their users.
Report this nonsense for what it is - a usability bug: https://bugreport.apple.com/