In most contexts, this is enough of a Discredited Trope that genuinely straight uses are rare, at least in works of fiction, unless the author is really clueless. When this trope is invoked without ironic intent, whether by people in Real Life or In-Universe by authors of fiction, it is typically used with a side of defensiveness by people who realize this is not generally considered to refute charges of discrimination or prejudice, and consider this unfair. This persistence of usage tends to take the trope from discredited to pet peeve for those that find the trope in itself dubious let alone its use by the more or less subtly racist, sexist, classist, etc. Do not expect these to be mollified by the introduction of a Black Best Friend or Pet Homosexual into the picture, most especially no