> Firefox has just broken people's workflows that were set in place for years

I don't think that is highlighted enough - the majority of the discussion is focussed on cosmetics, but it takes a lot of effort to break habits and muscle memory that have developed with daily use over many, many years (since Phoenix [1] in my case.)

It's also going to take a huge amount of time and effort to research, learn and configure replacement extensions. I really don't need that stress for something as important as a browser, so I'll stick with ESR as my daily tools as long as possible and build a new profile e.g. using Nightly as time allows. It's far from a trivial exercise.

[1] https://blog.mozilla.org/community/2013/05/13/milestone-phoe...