FWIW I segment by browsing with Chrome/Brave "profiles" and it's great. I can open a profile with no open windows from the Ctrl + Shift + m menu (along with guest windows), and context menus in all profiles then get an option to open a link in any open profile. The profiles are represented clearly on the filesystem, and can be copied.
I find it easier to compartmentalize my browsing with Chrome profiles than with Firefox tabs. I was really disappointed with the container tabs feature because it seemed like it was designed to do what I already do with Chrome profiles, but it ended up being essentially unusable.
