I didn't read the full complaint but the article focuses on bringing Apple IP to interviews. It's not clear that it was intended to steal trade secrets.
The Liu guy seemingly did so but he wouldn't be the first person to try to take his own work product out the door for personal reasons.
I distrust statements like:
> “pattern by employees who depart for OpenAI of taking steps to evade the security processes intended to protect Apple’s confidential information.”
This could mean almost anything.
They do explain that in more detail deeper in the complaint. They allege that OpenAI has obtained the offboarding checklist for Apple managers, that OpenAI is using it to issue guidance to departing employees on how they can avoid scrutiny, and that employees receiving this guidance have been ignoring Apple security personnel who try to schedule their standard exit processes.