My thoughts exactly.
People say the guy might lose control & injury/kill the "innocent" by standers, but from what I can see from the film, none of them are what I would classify as "innocent", seems to me that they knew it was illegal & made their choice to stand & watch so therefore they should know & accept the risks involved if something does go wrong. Maybe they lack the brain cells to process that part, but it still doesn't make them any more innocent.
I know I'm surely not going to be standing anywhere near the burnout car.
Only in the case if someone was just passing by & got hit by the burnout gone wrong then I would classify them as "innocent".