Reviews like this really bring me joy. Thank you!

In theory Gesturefy could provide a command for bookmarking a website to a specific folder using the Popup list. However it would have the limitation that the popup list doesn't supported nested popups, so root folders and all nested bookmark folders would need to be shown all at once. If you are interested in this, or maybe you even want to contribute via a pull request, just create an issue on Github :)