I don't work for Apple or (honestly) know anyone that does, but from at least one news article, I get the impression Apple openly encourages (and maybe even requires) it.
https://www.theverge.com/22648265/apple-employee-privacy-icl...
https://www.theverge.com/22648265/apple-employee-privacy-icl...
When I worked at Apple I needed a personal iCloud account to set up my corp MacBook. I simply created a new dummy personal account just for that. Nobody's auditing your iCloud account to make sure it's your "real" personal account or anything.
I don't use a personal icloud account on my work computer... it's not even allowed lol.
Just as I was leaving they were in the process of replacing everyone's computer with new ones that were much more locked down.
To take nudes?
Meta requires you to link your personal meta account with your work identity.