This kind of thing is almost always a result of the performance culture. There are a lot of promo oriented people in big tech who just want money and have no et

This kind of thing is almost always a result of the performance culture. There are a lot of promo oriented people in big tech who just want money and have no ethics (or engineering competency usually), sadly. These people have no issue at all plagiarising or stealing credit to get themselves more money and success. And it works.