I remember an article years ago that Apple is losing top talents in the Machine learning area due to its closed culture. The reason seems that it's hard to know

I remember an article years ago that Apple is losing top talents in the Machine learning area due to its closed culture. The reason seems that it's hard to know what's going on inside Apple and new grads don't want to risk their initial career for uncertainty. Has this culture changed? Their presence still seems insignificant in top conferences compared to other tech companies.