Say you walk up to some person giving out free samples of food. As a condition of taking this free sample, you also must take a pamphlet of advertisements from the people who are giving you the free sample. You take your free sample, and then walk away while dropping the pamphlet in the nearest trash can. That’s essentially what ad blocking is. You’re simply preventing certain parts of a web page from being downloaded to your device. That’s why people have issues with the “piracy” label, because nothing is being “stolen”. You’re just refusing to take all of it.