Oh, no worries. People are already working on ways to get around that.

See https://www.adexchanger.com/mobile/googles-quiet-preparations-for-apples-idfa-change-offers-hints-on-the-future-of-its-own-mobile-ad-id/

You know, I wouldn’t mind ad tracking so much if it actually ended up serving me ads for things I’m interested in. I wouldn’t mind so much if it stayed just as it is but I could tell them “I already own a X and will not need a new one for years, so stop showing me those ads. You are wasting my time and costing the advertiser money.”