Now that I read that thread I get what you're saying. I thought they were making the point that you don't know how things would go down if you did succeed in killing Hitler, it might do nothing, is fair.

But the counter to that just being , when we know that less than nothing would've changed was funny. They clearly just worked backwards from saying "assassinating politician is bad" and then couldn't admit they were wrong when it came to Hitler.

They simplified killing Hitler to the trolley problem and decided to definitely not ever pull the lever, and instead just hope the lever pulls itself.