Does this make containers unnecessary? Or basically built in?
A lot different. Containers act as a separate instance of Firefox. So any sites you visit within a container can see each other as if you were using a browser normally. The containers can’t see the stuff from other containers though. So you have to actively switch containers all the time to make it work right.
This keeps cookies locked to each page that needs cookies. So a lot stronger.
I think there’s some confusion here. You’re talking about Multi-Account Containers, that person was talking about the Facebook Container. Both Firefox features with confusingly similar names, and honestly that’s on Firefox for naming them.
Facebook Container is similar to this TCP feature, but focused on Facebook. And of course it was a separate extension, so very opt-in. Now, Firefox has rolled it out for ALL sites by default, which is awesome and SHOULD HAVE BEEN HOW COOKIES WORKED IN THE FIRST PLACE!
Yeah this basically sounds like it takes the temporary container add on that I think was folded into Firefox at some point recently and basically just does it behind the scenes now on a per domain basis
