I've been wondering about this too, because it seems to be a widespread problem that fans of these shows point out again and again, but somehow, the show's producers aren't interested in listening. With how vocal fandom is on social media these days, it's not like fans of poorly-written shows CAN'T be heard. I'm almost inclined to believe that producers and script-writers are stuffing their fingers in their ears and humming loudly so they don't have to listen to criticism. Childish, yes, but it WOULD explain why a lot of these shows keep making the same awful plotting and character mistakes over and over across several genres and styles.