I mean, that *was* the dumbed-three-levels-down version. Thor doesn't have to misunderstand it, the audience just has to misunderstand Thor's explanation of it.
Not really. The gods still created something in conjunction, which could theoretically exist in some form without them. They can avoid making the Snarl worse, but they can't fix it.The interesting thing is that, apparently, forceful tussling with the threads still counts as an act of true, collaborative creation.
More importantly, if the Snarl was the natural effect of bad logic... shouldn't it be over? Once the whole first world was consumed and the gods started working together, it should have stopped being a threat and died down, no?
The same thing that (nearly?) killed Laurin: studying the rift. By trying to seek detail beyond the consensus of the gods, she opened made herself partially dependent on the results of too many uncertainties, some of which would be fatal.