It's unreasonable to expect to be able to delete data that's been released publicly. Any attempt to delete arbitrary data will either fail or involve extreme authoritarian measures.
Once you accept that, you can focus on reducing the output of compromising information, rather than trying to erase it after the fact. Prevention over cure. This will inevitably lead to a society where people do more of what society wants, and less of what society doesn't. This is a good thing.
Also, I feel like we don't collect as much information as we should. Analytics is a lot less comprehensive than it should. Other than CCTVs, real-world analytics is basically non-existent. This greatly inhibits progress in AI/ML.
Start by accepting that, and everything starts to make sense.