I've stuck with Greasemonkey myself too. My reason is a bit more esoteric -- I use a user script which adds a dicebear.io/adorable.io avatars based on usernames on HN (I find it easier to remember commenters by the avatar/username combo rather than just username), and Greasemonkey seems to have been the only one out of the three to successfully bypass HN's CSP rules and show the actual hotlinked images.