Hmmm, the way the API restricts account access right now, no. But since the permission of that page is editable by the user, if a user has decided to share their favourites page, it could be possible to retrieve it via the API.

The only thing I'm left wondering about is how would you discover these account? On the website, you can get around by clicking people names on many pages (edits, list creators, image uploads, leaderboard, etc...) where most of that doesn't exist on the API.

Yeah, that would have been my next question.

So at the moment getting getting favorite lists from all or any amount of users is not possible since I can't just get all users?

Yeah, that would have been my next question.

And I still don't have a great answer or solution.

So at the moment getting getting favourite lists from all or any amount of users is not possible since I can't just get all users?

It is not possible. Everything is authenticated with the combination API key and session key that is unique per every authorization a user allows.