>It’s possible that this is a temporary situation. One source in the mobile marketing industry who requested anonymity said that Apple is using an “archaic” attribution engine they built years ago, and they are currently upgrading their code to comply with the new rules. The thinking is that Apple Advertising will eventually be compatible with SKAdNetwork, a framework Apple built for advertisers. SKAdNetwork enables completely privacy-safe advertising attribution, meaning that brands can know which ad campaigns worked, but they won’t have specific, granular data on which people viewed an ad, clicked an ad, or took action.
If they're going to use SKAdNetwork then they're tying their own hands as well.