The issue is not where the matching is done with data gathered on facebook, the ...

Epskampie on Sept 24, 2021 | parent | context | favorite | on: Apple's Power Move to Kneecap Facebook Advertising...

The issue is not where the matching is done with data gathered on facebook, the issue is whether they can track you accross other apps. They can't anymore, and "matching on the phone" won't make a lick of difference.