If Crystal gave an option to "allow high-quality ads" and then that list of high-quality ads was curated carefully in the users' interests, it could make sense.
But as soon as people start paying to be included on that list, it's not a list of high-quality ads, it's a list of people that have paid you money that you have decided meet some minimum bar (that you have incentives to keep low).
But as soon as people start paying to be included on that list, it's not a list of high-quality ads, it's a list of people that have paid you money that you have decided meet some minimum bar (that you have incentives to keep low).