Reasonable passphrase length?

So everyone is giving out this 7-word passphrase advice, which is basically secure from anyone in the world, even in the worst-case scenario that’s possible. It looks like we completely forgot threat modeling with this one.

This thread is for people to share their thoughts on what’s a reasonable passphrase length for all kinds of threat models, use cases, etc.

There is already this thread that discusses this.

Even though this thread is in a different category, it is topically a duplicate of the thread @Critical_Crab5543 linked. Please continue the discussion there.