This is awesome! I recently read this ticket[1] mentioning that porting of µBlock seems to be a starting point for gorhill to port µMatrix. In my perfect world, I would be using Firefox with nothing but µMatrix, as it is right now I'm having to use Chrome with µMatrix and sadly can't get rid of µBlock until µMatrix can hide blocked frames. Still, getting closer to that perfect world! The work done by gorhill is amazing.

[1]: https://github.com/gorhill/uMatrix/issues/73