They mistakenly believe that by pulling the lever they are complicit in the trolley. That by interacting with the trolley on the trolley's terms, they are consenting to the trolley's actions.
I used to believe that too once... Once.
I was disabused of that notion before 2012, but sadly not enough people were.
... Buzzwords? It's just clear text. look, if you have trouble reading it I'm sorry, we're not going to dumb if down for you; learn to read better than a third grade level.