DNS filtering is a very crude form of content blocking. It’s a supplement, not a replacement. Have a look at uMatrix for an example of heavy machinery. See also CSS-based blockers like Shut Up (or mixed blockers like ABP that include CSS-based rules), which are completely impossible on the network layer.
Also, content blocking is just one example. There are other legit use cases of the all sites permission: Tampermonkey, Stylus, password managers, any kind of web clipper, trivial things like Don’t Fuck with Paste, auto refresh, user agent switcher, etc. The list is endless.
Also, content blocking is just one example. There are other legit use cases of the all sites permission: Tampermonkey, Stylus, password managers, any kind of web clipper, trivial things like Don’t Fuck with Paste, auto refresh, user agent switcher, etc. The list is endless.