Exactly. You can't light diesel on fire with just a match. You need more heat or pressure. However, the burn from gasoline or diesel on your body is intense. I was once filling an old junker with gas when it spurted out from that tank and all over me. At first it was funny and felt nice and cold on the body. Then the burning sensation started and it took a solid 25 minutes in a cold shower to calm the sting.
Ignition isn't the only risk. Diesel causes severe skin irritation. I'm not sure about the effects of inhaling fumes from split uncombusted diesel, but it can't be good for a person's lungs.