Great open source extension
I've been using this on MacOS and iOS for a few months at the time of writing, and so far it's been a good experience. From the perspective of a somewhat normal end user, it's fairly easy to understand and use for downloading and running userstyles/-scripts. The extension asks for permissions on a per-site basis by default, rather than just slapping an "all websites" request in your face and calling it a day, which is nice. As someone currently learning some basics of web development, I find making and editing userstyles/-scripts with this extension intuitive as well. It continues to be a really good tool for me, and the fact that it's an open source project, welcoming contributions and feedback, is a plus in my book!