I do not really see the connection between having a lot of LGBT employees and this decision. Not every gay person is obliged to have the same opinion on teenage gender dysphoria, whether it is wise to transition someone who is not old enough to drive a car responsibly and whether it is wise to banish books from a bookstore, let alone how the ideal blacklist should look like.
This kind of topics tends to be discussed by tiny, though passionate minorities. I would expect Amazon to have some TERFs, too.
