Ive been using DNS filtering for years and many sites actually collapse the advert space when it’s not used, and while a plug-in certainly can improve the UI, the DNS blocking also disables the resulting tracking, the network requests still happen with the plugins.
Additionally DNS filtering happens outside of a browser as well, so will block ads in literally every app as well, when setup correctly it’s also device independent.
When I still ran my own PiHole, there where days where as much as 60% of the traffic was adverts and trackers.
DNS filtering also extends to blocking things like malware and spam domains
Does nobody check the permission requirements before installing the app that quite literally steals all their data. Like every data tracking option including “other” is selected by the app, it’s so invasive they cannot launch in Europe, but people are choosing to install it?