I don't really recommend it for anyone other than very bored devs, but it is very satisfying at times. The effort-to-utility ratio is honestly quite bad. Most of the *actually useful* functionality is redundant now with newer uBlock features.
I love the seratonin rush of one-click "disable 1p CSS" on an ugly website, or figuring out how to fuck with a clever-but-stupid paywall for the first time. :)
Also, the uMatrix UX is absolutely brilliant (that genius 2.5D green/red matrix).