Well, the bullets had the motive written on them in sharpie, so I don’t think there’s any chance this is a random murder, right?
Hypothetical: he picked his target at random. Researched. Finds out he was an insurance CEO. Devises this plan to throw investigators off the scent.
Then we’ve discovered the world’s most inefficient try-hard serial killer. If you have the slightest modicum of common sense then when you realize that the “random” target you’ve picked is a mega-rich CEO then you just pick a different random target.
And it has no significance whatsoever with regards to the general public’s reaction. At this point the true motives of the murderer are irrelevant, the general public has imagined him into a hero and that’s the important part.