Earlier quoted context omitted.
If there's anything they need to axe, it's the Gecko team. Just replace it with V8. The whole layout engine too--replace it with Blink. It is inevitable, so might as well get over with it now and save the wasted human effort and $$$. I tried to use Firefox recently. It leaked 28 GiB of RAM on x86_64 GNU/Linux with no extensions except uBlock Origin. Happened a few times over the month whenever I visited JS-heavy webs…
Could you clarify "recently" a bit more? Clearly it's after the release of uBlock Origin, but I'm pretty sure that there was a big effort to clean up memory use a few years ago. Maybe it's poor Linux support, I have a distressingly high 4 digit number of tabs open on a Windows box and I don't think I've seen it go past 8gb with multiple weeks of runtime. Edit: Win10 Pro on a Xeon with 48gb ram available
I hardly ever have more than 10 tabs open, and aggressively close everything I am not working with. I also shut down my browser twice a day (2 working locations) and never restore the previous session. I do bookmark some pages, but as a matter of fact I notice that I hardly ever refer to my bookmarks. I don't have the feeling that I am missing out on anything.