If a person wants to use an ad-blocker and then opt-in to ads then that's their choice. But the default should be to block ads, because that's what an ad-block

If a person wants to use an ad-blocker and then opt-in to ads then that's their choice. But the default should be to block ads, because that's what an ad-blocker is supposed to do. ABP allowing ads by default is just another one of the reasons uBlock Origin is better.