Surely if they didn't mind people blocking ads, they would add DRM and doubly/triply encrypt every data the app accesses/serves. As it is, they decided ads are just extra content you can strip away from your songs.
Having a hard time understanding your moral compass. Do you find it wrong that a userspace program is manipulated by the kernel? Do you think it's unfair because this may or may not devaluate ads?
What I think on that issue has nothing to do with my argument that "People should be allowed to modify their property, including what runs on their computer" is orthogonal to whether it's morally justified to run any kind of software of your computer. Is running a spam bot PMing suicide threats to people also justified with this logic?