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?
Unless I misunderstand this, the problem with Multi-Account Containers is that sites sharing the same container can read each other’s cookies probably because MAC is actually designed for multi-account scenarios rather than to isolate each site. I wish there was a way to containerise each site by default without breaking the web.
Looks good but I would miss new Firefox features and the stricter the restrictions the more friction. I used NoScript for a while in the past and it was a nightmare.