Absolutely, but just as it's not ok to enter someone's home just because they forgot to lock the door, it's not ok to exploit access at your old employer because their offboarding process missed something.

I do the same as GP does; I don't want there to be any chance that my former employer has forgotten to revoke access to something, so I make sure to clear out anything that might remain on any device that I don't return to them.

Who knows, maybe another former employee will decide to steal from them around the same time I leave, and me having access credentials on a personal device, even if I haven't used it, might arouse suspicion.

Many devices are indeed locked down. But given that it's an OS company and hardware vendor, many employees have access to hardware with e.g. SoC fusing that allows them to install custom-signed firmware. It's very difficult to make an OS lock out the people whose job it is to build the platform that OS depends on.

>it’s also that company’s responsibility

Is it? I mean legally. Obviously it’s dumb of Apple to have left this guys access open, but that doesn’t mean they actually had any legal responsibility to lock him out. As far as I understand, the law is pretty clear that you can’t access anything you’re not allowed to by policy, whether there’s a technical block or not.

It is NEVER any other persons responsibility to prevent you from commiting crimes. Never.

They MAY make it harder for themselves, but at no point are is anyone required to make sure you're not a criminal.

That's a difference between living in a society that robs you on every step and one where you can leave a laptop on a table in a cafe and it stays there.

Um, no. Why would it be their responsibility? There are laws regarding IP theft. If you willingly break them you can't just say "well your security wasn't good enough".

what part of "Mr. Tan warns them not to tell Apple that they have taken jobs at OpenAI, so they can stay at Apple as long as they can." did you miss?