This addon would be great if they improved the way you can always open sites in a container.

Many examples of what I am talking about on the github page, ie https://github.com/mozilla/multi-account-containers/issues/473

Instead I'm required to use an additional add on: https://addons.mozilla.org/en-CA/firefox/addon/containerise/ to accomplish what I want. Stop being lazy devs and implement this guys solution already.