In my view it's nowhere near as nice as it is on Firefox, with site isolation (Facebook, Google, Twitter, reddit), temporary containers, and a myriad of other add-ons that improve managing them (keyboard shortcuts and transition rules are the two I use the most).
its more like Vivaldi's tab stacks or FF's Tree Tabs. With groups there are no inherent additional security mechanisms in place to prevent cross-group contamination/access. i.e., two different tab groups can access the same site data.
containers however are completely isolated from each other. i.e., two different containers have completely different sets of site data.
Are you saying the biggest advertiser on the planet likely doesn't want to add functionality that could potentially hinder tracking for advertising purposes...?
I am shocked, shocked and appalled. /s
> For advanced users: You can also enable Containers without the Multi-Account Containers extension, by changing some preferences in the Configuration Editor (about:config page). Note that you will get a better user experience by installing the extension but, if you choose not to, you can set privacy.userContext.enabled to true, privacy.userContext.ui.enabled to true and privacy.userContext.longPressBehavior to 2 in about:config.
Debatable how significant that is as a difference.