I don't understand why you're trying to steer the conversation toward mozilla sync for the second time, ignoring the original saving password problem. If I needed mozilla sync, I would use it. But I don't need it. I don't want it.
So that you don't make any assumptions, I'll just show you what the folks at librewolf have patched out in their struggle against suitable UI:
There is no way I know to have it back into the browser except to find and revert the patches and compile librewolf yourself.
Do you even read the bullshit you linked? That's three lines of selfish nonsense telling me what's best for me. But if I missed something, I would love to hear from you how to enable password saving the old good firefox way.
They went too far in pursuing their foolish dogma and castrated a decent browser to the point where you don't want to work with it at all. For example, they removed the interface element that allows you to save passwords, even though the password manager is still there.
Their FAQ brushes it off with a single condescending line: "Use third-party tools, we know what’s best for you."
Here’s the joke: Librewolf ships with a password manager, lets you enable it, and even allows autofill but intentionally breaks the "Save Password?" prompt. No amount of tweaking (about:config, user.js, or librewolf.overrides.cfg) fixes this. The only way to store logins? Manually typing every credential into about:logins like it’s 1995.
It’s ironic that a browser marketed as "freedom-focused" would sabotage basic UX, forcing users into their preferred workflow. It’s the same kind of disrespect for user autonomy that drove people away from Firefox. Firefox at least lets you somehow re-enable/disable features.
don't eat yellow snow