I think it's interesting that both jade and rose entering the medium relied on a blind test of fate whereas johns was like- eat this apple and Dave's was climb bitch

Nay, Rose’s was a leap of faith yes, but only by the circumstances. Otherwise, her test is merely to shatter a symbol of Void, relating to her mother. But you could say SBURB knew this and accounted for the leap of faith. However, John and Dave’s are also highly symbolic and you don’t give them enough credit.

Dave’s wasn’t related to the climb. He didn’t manage to get there in time, remember? Seppucrow tossed him right before he could reach the Egg. It was a test of Time. The Egg cracked on its own moments after the impact of the Meteor, and he survived thanks to the time Bro bought him by splitting it in half. A test of Patience, for a Knight of Time.

For John though, it’s not as much of a challenge, as it’s… Well, I mean. Taking a bite out of the Apple? Whether you consider it the Original Sin, loss of innocence, or take the Gnostic Meaning of Sophia giving a gift to Humanity and try to correct her mistake in creating Yaldabaoth…  There’s a lot to unpack in the fact it’s an Apple.