Apart from signing into multiple accounts or isolating pages under the same domain, is there any advantage to using Firefox containers from a security standpoint or do you think that Total Cookie Protection is sufficient for most use cases / threat models?
cookies are just a tiny fraction of the whole picture of fingerprint process. The ad companies use your browser agent, IP address, cookies, Canvas, timezone screen size and many others pieces to create a unique identifier that match almost exclusively to you. It’s pretty scary. But the new cool boy of course will be WEI.