In my experience that had better support for per-eTLD temporary containers, so that each site can have its own, and the data can be discarded relatively soon. I also have more permanent containers for things that I want to be able to persist (e.g. work uses SSO so I need to link multiple sites together to log in).

When I used it I found the management in Multi-Account Containers to be onerous (I don't believe it could do automatic containers based on eTLD).