Ironically the only time I wanted to use this feature was to separate my accounts related to my project and browser extension. Except that the mozilla 's site

Ironically the only time I wanted to use this feature was to separate my accounts related to my project and browser extension. Except that the mozilla 's site does not care about your privacy. Whether you use containers or not, they automatically get your identity from the browser, and then you cannot just be logged out.