I don't feel like rewarding a company for grabbing a monopoly on short form streaming video then making their service borderline unwatchable through aggressive, increasingly unskippable ads.

Plus (getting back to the topic at hand), having adblock for all your devices is so ... pleasant. You forgot how jarring and upsetting (and LOUD) advertisements are. Having them puncture your DNS adblock while using Chromecast is like getting a wet slap in the face.