Your imagination aside, the statistics show a decline in Firefox numbers, and it has a woefully small marketshare (~4% across all devices). It's been declining for 12 years. They lost ~50m users in ~3y.

"Techies" have or are moving on because Mozilla's pace of development is woeful, and compatibility is poor. Killing the RSS reader was the final straw for many. Disney advertising in-browser was another major moment.