@lanodan That’s interesting — thank you! it looks like two different slopes: one mostly constant until 2022, and then something happened that made it worse.
It lost 5 Million users (when looking only at the maximum) per year from 2020 to 2022, and from 2022 to 2024 it lost 10 to 15 million users per year.
That’s a doubled or tripled loss rate that’s not yet in my graphs.
Do you remember what @mozilla did in 2022?