Meh. Even if everyone in the world had "enough brains", I would still expect arguments and fucked up worldviews. Put a bunch of Very Smart economists, physicists, philosophers, doctors, engineers, etc. together and you'll get intense arguments and crazy views on what the world's biggest problems are and, especially, how to fix them. Morality. Environment. Spirituality. Economics. Freedoms. etc.
Having enough money to buy a Grenadier probably means we have the luxury of spare hours each week for off-topic forum debates.