A lot of people mentioning things like Privacy Badger, NoScript, ClearURLs, Ghostery, etc. Can anyone explain to me what benefit these provide over a properly configured uBO setup?

My understanding is these are all redundant, and just serve to slow things down or provide ways to leak your data (looking at you Ghostery...)

Also saw a comment about Multi Account Containers. I don't see this as necessary, at least in my case, ever since they introduced first party cookies isolation by default. The only application I see is if you want to log into the same website with two different accounts, e.g., using Outlook for work and personal email on the same machine.

tl;dr - FF+uBO=dream team