It's not going to be so long that he's too old, if that's what you mean.

Again, you are assuming something other than what I'm saying. When I say he's not ready I don't mean that he's not ready to be trusted. I mean he's not ready to trust us and he's not ready to be part of this kind of insurrection. It's not personal for him yet, which means it's not something he cares about and it's not something he'll understand if he's not made ready to accept it all. That's why we need Harry in the lock and part of it before Draco comes on, too. So that Harry can help him understand it when it comes. When, not if. Same as Hydra. (Sorry, Hydra, but it's true.)

If he's fighting for anything right now, it's for Harry. Which is fine. But that's as far as it goes. So he needs to want to join because it's something Harry finds important, and then he also needs to be prepared for what he'll find, and Harry's the best person to help with that. And Harry can't do it if Harry's just learning everything himself. It takes him forever to figure things out but once he does, he can help explain to Draco in ways that Draco will find at least acceptable, if not necessarily logical.

You're right; you don't really understand him at all, do you?