It’s not on the brink, it’s that Firefox shims GA[1] with Enhanced Tracking Protection, which is on by default.[2] analytics.usa.gov uses GA. So you really can’t rely on usage figures that don’t represent the truth of your situation. [1] https://github.com/mozilla/gecko-dev/blob/413b88689f3ca2a30b... [2] https://blog.mozilla.org/en/products/firefox/firefox-now-ava...
The decline has already been happening since around 2010 without any drastic ups or downs.