Yeah, if you're blowing it up that will likely cause threads to reach the threshold which otherwise wouldn't.
You say "blowing it up" and I say "making the ludicrously tiny default text halfway reasonably-sized," but then I'm a selfish man with aging eyes, a personal agenda, and a tendency to be verbose...
BTW, the last small post from Jonny in that thread made the zoom-whatever problem so bad that the page actually rendered with large blocks of black instead of large, empty swaths of the page background graphics.