Your consent is still required, but Apple is making promises about anonymity and privacy they simply can't guarantee when sending data to a 3rd party server.
Apple is using its years of marketing as a privacy forward company just to put one of the worst technologies for privacy a tap away from uninformed users. (E.g. my parents who will tap 'OK' on every popup thrown at them.) After years of headlines of how dangerous consulting LLMs for health concerns can get, Apple launches ChatGPT integration in Apple Health.
Additionally Apple has made promises to be carbon neutral by 2030, impossible if we start to measure the true cost of Apple Intelligence. Unless of course we just blame that on Google or OpenAI. You know, like Foxcon was responsible for the suicide nets and horrendous conditions in the iPhone factories.
For more than a decade Apple has trained its employees on supplier responsibilities, ethical code of conduct and marketed their privacy and environmental causes. None of these values are compatible with OpenAI or Google, who are now running Siri and Apple Intelligence.