> They maintain a codebase that rivals that of Chrome and of the Linux Kernel and push the equivalent of Rust's entire codebase on a monthly basis.
Is that comparison supposed to make their management of the code base seem better or worse? Chrome, Linux and Rust are arguably colossi in their niches (Rust having the weakest claim). Firefox's niche is Chrome's and it doesn't do that well. It used to be that at least Firefox had it's own little area with more interesting extensions but obviously that was too hard for them to handle - yes I'm still grumpy about ChatZilla.
Well I replied to a comment suggesting they weren't working on Firefox, by noting how much work is being done on Firefox. But you seem like you want to change the subject to a different one, which is the extent to which you can gauge "success" relative to competitors, or infer management efficiency, which is fine but orthogonal to my point.
You might be interested to know that there are still some legacy extensions that work on today's Firefox. Specifically, when Firefox breaks VimFX, I'm done with it. But while it works, I'm sticking with Firefox. It's like having the power of Qutebrowser but with the extensions and performance of Firefox.