That is sad. One strategy on two wheels is to be in lane position one and watch your mirrors. If it looks like the motorist isn't going to stop, you pull forward next to the passenger side of the car ahead of you.No alcohol. He was just at a downtown red light. Not near the show grounds setup. I can only imagine that the fast hit from the rear while he was stopped broke his neck. Simply an elderly lady rammed him from the rear.
Anyway, when we ride, we need to be aware of the risks and work to avoid the ones that we can, and minimize the ones that we can't.
Hopefully your friend had evaluated the risks and accepted the ones that he had no control over while minimizing the ones that he could. Regardless, he lived life on his terms and did the things that were important to him. I am sure that more than one person told him 'You'll kill yourself on that thing' and he didn't; unfortunately someone else did. Anyway, kudos for him
R.I.P!