Semiconductor technology is one of the areas of global-technological competition which surely benefit from secrecy. For example, several years ago one of the c-level executives at this specific OEM was caught taking pictures inside of one of their customer's facility. Only the engineering staff from that oem is allowed inside those facilities now, and only for maintenence activity.
It's a very secret industry, and getting even tighter now since China has been blocked from acquiring the latest semiconductor technology. China has so far invested over $40 billion in boosting their chip-making abilities, to acquire capital, IP, and knowledge-workers. Given their history of borrowing technology from other countries without attribution, if I were at the head of a semiconductor related company, I would clamp down on the secrets ahead of the danger.