@JeremyCherfas I’ve used Firefox as my main browser since forever. I have only run into one very well advertised and intentional extension breakage. It was when they cut over to the more Chrome-like extension model vs the more freewheeling add-on system of the past. I had a lot of warning, and could have switched to an Extended Support Release or a fork if I didn’t want to go along with the change.
/@variablepulserate