Is one of the most popular philosophy thought experiments worthless?

Is trolleyology a joke? No, seriously, is it a joke? That people chuckle when asked if they would push the fat man on the trolley tracks could mean the entire thought experiment isn’t of much use. “A trolley is careening toward an unsuspecting group of workers. You have the power to derail the trolley onto a track with just one worker. Do you do it? It might not matter.”