Why are the contestants dumb as bricks

I just started watching and can't even make it past the 2nd episode. How are the contestants so dumb?? It was absolutely obvious that Dong-Jae was the Fanatic, It was absolutely obvious that Guillaume was the terrorist after he kills the researcher, impersonates the officer, and plays dumb with the shittest acting know to man, It was also obvious that Seok Jin was the police officer after walking away immediately before the first terrorist was killed. A top 1% test scoring mechanical engineer failed to figure out both of the terrorists when it was obvious and the Dunning Kruger effect making its appearance twice before the first episode. The only person with a brain being Guillaume and everyone else trying to put square pieces in round holes like 3 year olds, again including the goddamn engineer. Orbit's strategy in the second game was actually good but he failed fantastically in trying to communicate his idea and the other team members failed to even consider it. These are supposed to be the representatives of intelligence in the show?

Kyeong Rim running around like an aunt at a family gathering after confirming See Won was a terrorist. Yeon Woo doing absolutely nothing both episodes, including defend herself. Somehow studying 16hr's a day is supposed to show intelligence? Are you joking? Orbit seems like he has a tiny spark of brain but I am convinced he is a 12 yr old stuck in a grown mans body.

How are top graduates, champions, and top people in their respective fields so terrible to watch? No one did or said or did anything remotely cool or interesting, everyone except Guillaume acted so damn immature.

Is there any reason I should continue watching? I came from a binge of other Korean gameshows which I thought were pretty good, including Bloody Game S2 and Siren.

edit: I also want to add, these people had orders of magnitude more time to think about this stuff than the show shows.