It’s easier than that your phone company will sell your data in aggregate and can trivially prove who both drove through their town and stopped at an abortion clinic. You also bought the pregnancy test with your debit card, had it shipped to your address, used your loyalty card to save 50c on the eggs you bought at the same time. You did the research via google search, navigated via google maps.

Even if you did none of these things the mere act of recording license plates driving through and then situating folks at abortion clinics to record plates could easily leak enough information. We should do more to protect our information but we must accept as a practical fact that for most too much will leak and attend to strenuously protecting our rights even in the face of such leaks.