Well the cops might be taking pics of a dead body the next day. So then they could say “yeah we probably should’ve responded to that one last night, but we just couldn’t risk that it might’ve been one of the 0.01% of these calls where it turns out it’s an internet swatting thing.”
Yep. I guess there are no other possible methods of conducting a police investigation than your suggested method. Pack it in, boys. Space Cowboy’s got it all figured out for us!