The better use case would be to make AI cancel that damn subscription that lets you jump through 20 dark pattern questions and then tells you to call customer support.
I would definitely like an AI that helps me avoid dark patterns and enshitification. Is there a browser that automatically solves annoying captchas for you?
It's essentially impossible to write a traditional program that can go through the full process of logging in and changing a password autonomously, without writing fragile site-specific procedures.
And if something breaks, and something will break - it's Software+Apple, their support will talk to you for 3 hours very professionally, giving you the scenic route of everything IT support has done in last 300 years and then they will schedule another call, apparently with an expert, on which you will be told to reboot your devices (yeah, all of them), and next stop will be asking you to reinstall your devices clean, of course they will remind you to backup data and how iCloud plans can help. After all that you will be asked to go to a support centre and drop your laptop there (that is, if your device is still under warranty).