Yes. It is ‘funny’.
If a deliberate coordination, imagine the type of people it would take to orchestrate mass murder of strangers in this way. It would take many different people discussing the plan many different times. Nothing spontaneous about it whatsoever.
Another interesting point.
The new name of the shooter, Samir Al-Hajeed, was a name that came up in Las Vegas as a possible second shooter.
Check this out from CBS on October 3, 2017
“Several Twitter users falsely identified a man named Samir Al-Hajeed as the gunman wanted in connection with the mass shooting. “
CBS called it a hoax.
https://www.cbsnews.com/news/las-vegas-shooting-hoaxes-spread-on-social-media-facebook-google/