Plus, you can also move existing tabs into a given container the same way, not just new tabs, all at the cost of a single tab refresh.
[1] https://addons.mozilla.org/en-US/firefox/addon/search-and-sw...
If a person wants to access an ad-ridden website using several accounts in Chrome, they need to install, configure and maintain all of their favorite ad-blockers and anti-tracking extensions in several Chrome profiles. Lame.
In my experience, people who prefer profiles over containers are mostly casual users who don't configure profiles and use maybe one or two extensions.
What benefit do the Firefox containers have that Chromium profiles are missing?
E.g. you can run your email tab in the default container, and a bank app in a separate "money" container next to it.
Or you can run one gmail (or outlook, etc) account in one tab, and an another gmail (or outlook, etc) account in another tab next to it.
Containers were actually the reason for me to switch over from Chrome about a year ago. The biggest benefit I see is that they're made easy to extend via add-ons.
In my set up I currently have a new container created every time I open a new tab, either blank or from a link, and automatically removed after I close them, which is made possible by Temporary Containers add-on in auto mode.
This creates automatic boundaries for all of my browsing. I then also have persistent containers for sites I want to be logged in to.