I am slightly older than you, and of course it was worse. Thank you for sharing your story. Yes, people have long-ingrained reactions. But people, especially those in positions of responsibility and influence, are obliged to counteract those antiquated markers by training them out of their behavior and speech. I have a friend who grew up in a household in which the n-word was used regularly, without any overt racism attached. Would you excuse her use of it because she was "reared in it"?
One more point here: this is not about Lara Spencer. (I barely know who she is, as I long ago stopped watching TV, especially in the morning.) It's about media. The ABC culture is the villain here; she is just one symptom of its toxicity.