Alternative title: Tim Cook apparently doesn't understand current politics, thus proving why a business's which sells products should not get involved in political press releases.
Can you explain how? Denouncing bigotry is, after this weekend, 100% in line with current politics.
By quoting Luther King? I'm having a hard time seeing what you find wrong here.
The statement you quoted is one such statement.
It's hard to tell if you're being sincere, because what you pointed to as an example of a political statement is utterly baffling.
"We are all equal" obviously, clearly means "we are all entitled to equal treatment", not "there are literally no differences between any two people."
The political of the day are such that it is somewhat more controversial than at some other times.