Yes, but the point you keep running from like a scalded cat, is whether he picked this one based on the actual crowd, or if it was just a large body of people.
The fact is, this event could have been selected on dumb luck rather than the people attending.
“Hey, there’s a large body of people hear some fuel tanks. I’ll use this event.”
Nobody knows for sure. Until we find a note, or some other evidence, it’s still speculation at this point.
It’s not speculation that he killed people at this event.
Everything you are arguing is speculation.
Which leads me to believe that you are purposely confusing the issue.