[kozziollek]

I never used uMatrix, but as far as I am aware uBlock Origin has the same functionality if you check "I am an advanced user" in settings.

See: https://github.com/gorhill/uBlock/wiki/Blocking-mode:-medium...

[cobby]

No. uMatrux offers way more granular control.

[0-_-0]

I don't know about that, but it breaks some of uBlock's functionality:

https://old.reddit.com/r/firefox/comments/706xrr/umatrix_vs_...