from the 1 survivor game experience i have, i can say this is indeed true, most of the challenges are silly and are more of a game of who can type the quickest.
Its where a bunch of cliques circlejerk new players. And when someone hosts a game just for newbs, those vets juts use alts. It's a pretty good way to waste your time, and rage quit because you get voted out early. Oh, and your either good at challenges, or you suck like me. Don't join unless you have a WPM of over 9000.
We have trophy game in which its winner take all and 2nd gets silver rd gets bronze. You can't play ranked games with a host. So we found another way to congratulate people on doing good.