"Killing Intel, I, I just had to resign from the Apple Board"

This quote by Arthur Rock is most likely describing the resignation of Intel CEO Brian Krzanich from the Apple Board of Directors in 2018. Rock is likely revealing his frustration in the scenario, as Intel had actually been a significant partner of Apple for many years. Intel had actually provided the processors for Apple's Mac computer systems given that 2006, and the 2 companies had a close relationship. Rock's quote indicates that he believes Intel's departure from the Apple Board is a significant loss for the company, which he needed to resign from the board in response. This might be analyzed as a sign of solidarity with Intel, or as an indication of disapproval of Apple's decision to let Intel go. Either way, it is clear that Rock was not delighted with the circumstance and felt the requirement to act.