The real gem of Firefox is Containers. No other browser has something like this. It's something critically missing from Chrome. I don't mean "Just create a private window", I mean being able to create 1 + infinitely many profiles/containers. Firefox has an extension called Temporary Containers that makes this better: Every new tab is a temporary, ephemeral container. By default I get isolation. I have it configured so if I hold Ctrl and click a link it will open in the same existing container (in a new tab). If I want sessions to "join" I can do that, but I get defense/privacy by default.

There's another called Proxy Containers so I can have separate tabs taking separate paths out.

There are many benefits to Chrome and it's dev tools, and I respect the Firefox mission more for all the shit Mozilla has done. But I'm bound to Firefox regardless of the pros and cons because it's the only browser that can do this.