Sorry, 1984 references!
It was said during the Two Minutes of Hate. The Brotherhood shall be sending a visitor to pay you a visit soon.
What do you mean by collapsing threads? Currently if you clicked on a comment, it should collapse said comment and any children of the comment.
With regards to navigating to the next/previous top level comment, worth putting that as an “issue” on Jerboa’s GitHub as a feature request if one doesn’t exist for this feature already.
At least according to this article, it seems like Wayland enabled by default will be for the next release!