I love the containers too. My current use case is to keep my YouTube account separate from my Google one. Google doesn't need all that behavioural data in one place.

It's a pity Firefox doesn't get the praise it deserves half as much as it cops criticism.

It is absolutely not an advanced process. It's clicking a gui. It's not advanced thinking to understand profiles. It's a basic ability to hold multiple things in your mind at once. Telling people that's difficult only increases the societal problem that being ignorant is ok.

The possibilities with Firefox multi containers and automation scripts as well are truly endless.

It's also possible to make Firefox route each container through a different proxy which could be running locally even which then can connect to multiple different VPN's. I haven't tried doing that but its certainly possible.

It's sort of possible to run different browsers with completely new identities and sometimes IP within the convenience of one. It's really underrated. I don't use the IP part of this that I have mentioned but I use multi containers quite a lot on zen and they are kind of core part of how I browse the web and there are many cool things which can be done/have been done with them.