Better get some blankets because Apple has made significant contributions to many open standards - for example, USB-C. And, back in the day, OpenGL.
Its a mistake to think of a large company like apple as if it were a person, with their own goals and ideas. Apple is just too big for that. I mean, they have 164,000 staff. Thats big enough that "small" business units will still have thousands of people. So each area will end up creating its own culture, and have its own way of doing things.
The graphics division - these days - seems very intent on doing their own thing. But that doesn't tell us much about the rest of apple. 164 000 people is a lot of people. That's an awful lot of different opinions about open standards.