There's nothing about Kylo that seems weak. That's what drew Ronan to him in the first place and it hasn't changed, not even in the wake of the Horizon. But it had been like that with Adam, too. Adam had become so powerful after his bargain with Cabeswater. Then he'd lost his hands and his eyes and nearly lost his life and soul to a demon who'd only actually been targeting Cabeswater's dreamer. Had Ronan made Adam more powerful or had he only made him more vulnerable?

Ronan leaves the question unanswered, telling Kylo instead, "I don't regret it, either. My memories don't make a difference. It's what I want and I'm going to hold up my end."