From Raymond Hill, the author of uBlock Origin: Please do not use those online tools which claim to measure how good is your content blocker, they are often

From Raymond Hill, the author of uBlock Origin: Please do not use those online tools which claim to measure how good is your content blocker, they are often flawed.[0] I don't know how much that applies to this particular tool, but I did notice that it's flagging requests as 'not blocked' even though they're blocked with uMatrix. [0]: https://xcancel.com/gorhill/status/1583581072197312512 https://xcancel.com/gorhill/status/1583581072197312512