Thank fuuuck they're reverting this. There's so many other issues with the game that I personally feel contribute to the feeling of dying too quickly that are not related to the TTK at all. And it was abundantly clear the game was not balanced around the new TTK, the weapon balance and moment-to-moment play superior under the launch TTK. Fragmenting the audience and breaking the balance was not a solution to a problem that didn't exist.
Keeping the vision unified and balancing and fixing the game around that is much, much better. Really happy, if surprised, DICE has decided to do this.