I've you've ever read a book or interacted with any product, you've learned from copyrighted material. You've extrapolated "some organizations don't allow you

I've you've ever read a book or interacted with any product, you've learned from copyrighted material. You've extrapolated "some organizations don't allow you to contribute if you've learned from the code of their direct competitor" to "You're not allowed to learn from copyrighted code", which is absurd.