i just found out that firefox finally made profiles easy to use - a first class feature like chrome.
I found out from this techlore video https://youtu.be/dwFSytu_JUw
and even better then chrome, in macos dock bar, each active profile has its own icon

Chrome has had profiles for a long long time, easy to segment accounts/jobs for better isolation (extensions, etc).
Firefox has always had profiles hidden, they were just a super pain in the butt to the point where it wasn't really usable.
Better isolation is great!
Yeah, that is a pain in the butt - you wouldn't use that in a normal workflow. Plus you couldn't tell which window was in which profile! you needed a extension to give the windows labels, but they still got mixed in the taskmanager/dock etc.. it wasn't really usable in normal multiprofile concurrent workflows. As proof, your example firefox profile manager is empty!
As a motivational example right now I have 25 profiles, for 25 services I use, and i swap between them all the time.
Thank you for the response! Am sorry, but proof for what?
The profile selector is empty because I used a temporary Kubuntu environment at https://distrosea.com/ for the screenshot, since I am currently on-the-go.
Holy smokes! 25 profiles! That's a profile for almost all possible 25 identities for the whole month of a spy job!
that firefox profiles are not first class like they are in chrome, but that is moot now, they are just as easy to use now.