I didn't look at the forum or wiki until after my first 400 games or so, of which I had a > 90% win rate at the time so just because people don't come here doesn't mean they don't build good decks. I came to the forum and wiki really until after my first 800 games, or so because I was having trouble figuring out a FG Farmer...
Also, there are a lot of people who might suck, who want to figure it out on their own. Getting help in their mind is a type of cheating.
Also, there are a lot of kids, who don't want to read, they want to play...
Also, my 7 year old autistic son has an account, he like's to do the building thing. And so he mainly just builds and submits a deck to the Bronze thing, he gets money only through the oracle, I think his account has like 250 cards. He doesn't even really understand what he is building... onetime, he wanted a creepy crawly deck, and selected all the cards that had pictures of creepy and crawly cards he had and selected some pillars, didn't matter half the cards he didn't have matching pillars for.