I haven't seen anything indicating whether these features can be disabled. I'm not interested in adding a further invasion of privacy to my phone. I don't want some elaborate parlor trick helping me write. I've spent some time with ChatGPT and while it was somewhat novel, I wasn't overly impressed. Much of it was rudimentary and often wrong. And I wasn't overly impressed with some of the code that it generated. Reliance on such tools reminds me of an Asimov SF tale.
I'd certainly expect you'd to be able to at the very least disable the stuff that does outgoing network requests.
As for the stuff that's local to your device, how is your privacy being invaded? It's your device's OS looking at data on the device it's running on, as it's always done.