They made too many decisions on their own to be a 1:1 replacement. I think there needs to be a new fork, which would just remove all of the spyware bits.
Like I need to watch DRM for my job, and it doesn't work at all. I also already ported most of their configs that I actually researched each and every line of myself + Waterfox + Arkenfox's configs into my generic Mozilla Firefox, and it works great.