foobar20198
Much more time is spent maintaining software than writing the first version. Some poor sob is going to have to go and fix all those "silly" mistakes that were made and the bugs they caused (but of course, as we all know, they would have been avoided if the programmer had just been a better programmer). Save yourself (and us) the bother. Please use languages that stop you from shooting yourself in the foot.
(Not that rust will avoid bugs, but it seems to catch a lot of stupid "mistakes" before compile time. We're all humans and make mistakes, please accept that fact before inflicting software on us.)
Similarly, things like Focus let you access a throwaway experience even more easily. Still no password saving though.
Switching between profiles in Chrome involves clicking on an easy to find button, and lets you easily run multiple profiles in parallel. No terminal involved, accessible to anyone.
To be fair, running multiple chrome profiles in parallel kills my (somewhat old) machine (mostly by virtue of having too many tabs in each profile), so Firefox does win there.
But fundamentally, Firefox decisions are made by Mozilla employees, to further the goals of the Mozilla company (which makes money from those decisions - sure, to be hopefully reinvested). Firefox isn't like those other large open source projects where the codebase and thus decisions are owned by many independent (and mostly commercial) entities. Outside contributors have very little say in the product, so I wouldn't say its any better for people to contribute to Firefox vs e.g. Chrome. I.e. Mozilla wants their code - but in the many cases that have become publicised it doesn't seem like Mozilla wants their opinions.
(This is probably just the reality of end-user facing software projects with major UX components. But it's still sad to see contributors being invited in when they'll be ignored in the decision-making.)
// Edit: and it looks like fabrice_d made pretty much the same point while I was writing my comment : )
My only exception would be scratching my own itches, but here they're asking for help with company goals.
It is however still very close to a clone & bootstrap & build process, at least on Linux and Mac - i.e. one of the better projects. (For comparison, I recently tried to build Facebook's Infer, and that was even worse than building OpenOffice back in the day.)