Some Apple staff are sounding off about Tim Cook's back-to-office drive and say it's 'silly, and very un-Apple'

• Some Apple staff say they're unhappy with Tim Cook's push to get staff going in three days a week.
• The Apple CEO previously said that in-person collaboration is essential for the company.
• "It's very un-Apple," one employee said about its explanation for the back-to-office push.

Some Apple staff are not happy about CEO Tim Cook's back-to-the-office drive, which he's previously said was essential for the company. 

The iPhone maker emailed employees in March threatening to take action against those not going in at least three days a week.