Although 50,000 humans inside a football stadium are not 50,000 times smarter than a single human. Indeed taken as a single entity, its intelligence is probably less than the average person. Collective intelligence likely peaks in the single digit number of coordinators and drops off steeply beyond a few dozen.

If anything mobs are dumber than any one person in the mob.

Are you comparing 50k elephants with hell? I bet our "ability to scale up a network of brains" is infinitely more dangerous than that.