I use Strict Tracking Protection, Facebook Container and Multi-Account Container and I am beginning to think it’s overkill. Doesn’t Strict mode block third-party cookies anyway? I also clear cookies on exit. Containers allow us to login to the same site with different identities, so I am assuming it containerises first-party cookies too, but I wouldn’t need that. Also, doesn’t Multi-Account Container replace Facebook Container if you create a separate container for Facebook?
Isn’t that what MAC + Simple Tab Groups do? Isn’t it still the case that if we have, say, 10 tabs in the same container they can read each other’s cookies and possibly other data? If that’s true, it seems one way to stop this is to create a separate container for each site. That would be very impractical unless the browser does it for us.