Earlier quoted context omitted.
Don't get how it's different from ublock or what's the benefits of umatrix
Does ublock allow to block all javascript and cookies by default, and manually whitelist javascript or cookies domain by domain?
I did this for a while but it all got to be too much trouble honestly. Now I just run uBlock in default configuration and also have an /etc/hosts file, and browser set to clear all history and cookies when closed.