That's really handy! I like that it handles domains automatically
Edit: Seems to break ad blocking and there's some issues with login. Such as adding a container for YouTube requires also doing *.google.com since that's how the login is handled. Interesting and I'll keep playing around with it
It uses the existing FF container functionality, so uBlock should not be affected. I also use uBlock and haven't noticed anything bizarre. Maybe you just used YouTube right before a necessary update to uBlock's filters got loaded.
Regarding login, it's a struggle with any container addon. But I like how this one makes it easier. It streamlines it a bit because you can right click the page and go to Auto Containers -> Exclude tab from domain exclusions, then login as normal and add each intermediate domain to the container's URL patterns. It would be nice if the dev could add a way to record all intermediate domains and add them at the end; sometimes I miss one or two due to an auto-redirect.
Usually, with most browsers, you can't separate YouTube from Google in order to watch their videos. People can get around this using NewPipe and various forks, that are mostly for Android. There is also FreeTube for the desktop, that doesn't allow ads, but does connect to Google.
Well when I reloaded my YouTube tabs in it they all had intro ads and intermediate ads. Maybe it was that one time? Because as soon as I disabled the extension I was ad free again. Maybe your experience was different, but that doesn't mean mine didn't happen.
Edit: Seems to break ad blocking and there's some issues with login. Such as adding a container for YouTube requires also doing *.google.com since that's how the login is handled. Interesting and I'll keep playing around with it