Earlier quoted context omitted.
The changes Apple made were to increase privacy. Content blockers that have access to the page have no network access. A separate process that does can only update the blocking rules. I quite like Ka-block
"The changes Apple made were to increase privacy" Apple gobbles personal data too and processes it and sells it etc. They are simply rather better at looking ... friendly. They really are very good at that.
Disclosure: I work at Apple, and have seen zero evidence of anything but trying to make things continuously more secure and private. This in fact makes my job (machine learning) much harder because I don’t have user datasets to leverage.