[ryankrage77]

What they really mean: "We're no longer developing for/testing Firefox, and if you run into a technical issue we will not offer any support". Firefox will probably continue to work fine.

[oogali]

This is likely in response to some internal product/development team being told to go faster.

I’m guessing that their feedback was that cross-platform UI testing is occupying a significant chunk of their time.

Leading to some MBA type thinking they could cut the testing time in half if they eliminate browsers that don’t consist of 99% of the user population.