[scotu]

what you mention is one advantage, another example is that you are not limited to 2 contexts (private tab & non-private tab vs as many containers as you need).

Related to the advantage you mention is also the reverse: clicking a non-facebook link from the facebook container can (if you want) open a non-facebook container

[freediver]

Ok starting to understand it. Seems like something I would have a hard time explaining to a non-tech person.

[scotu]

yes, you could describe that use case as "quarantining" websites in short, but I'd say it's a power user feature if managed manually.

If you install the "facebook container" extension, it's zero conf but it's only for facebook.

Another use case I saw users being interested in, is you have 2 (or more) accounts on a website and you can login in both at the same time in 2 separate containers (you cannot quarantine the website to the container in this use case because you need to open it in multiple containers). You can do that with incognito, but the second one is very temporary as closing the browser is going to log you out.

[freediver]

So compared to a private tab, you basically get persistence and some form of organization (containers also act as groups).

How important is to have tabs from different containers in the same window?

[scotu]

I don't find it particularly important, but that's also a difference with incognito