Seriously, you don't think about sick passengers delaying things until you see it happen. I got to 74 St-Broadway, and heard someone had passed out on the platform, and saw a man unresponsive very close to the platform edge, with people surrounding him, including the C/R. Someone started to do CPR, and after maybe 10 minutes, EMS arrived and took him away, but service was already well past screwed by then, as it was the 7 during rush hour. Still, it made me realize that sick passenger could be anything from someone who just puked all over a car to someone who might be having a stroke or a heart attack and needs urgent medical attention. Quite possibly he might've not made it in the end; I'm not sure, but I can say that taking him all the way to Hudson Yards would not have been the right course of action, as you suggested they should do.