At least he realizes it's his fault. That really was a misjudged decision by the party leader. The girls are trying to be nice, but at the end of the day there's no going around how he dropped the ball by continuing to interact with the goddess he knew to be dangerous.
No, Rain. this is a problem that wouldn't be solved if only you were stronger. Even if all the girls were A-rank strong that still wouldn't change the fact that it was a bad call on his part to not flee at the right moment. He fucked up and owned up to it, at least let him.
It's stupid how the escape scroll was first presented to be some guaranteed easy escape tool that turns out "needed time to use". If he knew that, then they should have planned around its use since it's their only lifeline out of that clearly dangerous place. It's out of character for him not to plan around that (suspiciously asspull-like) restriction because he's always been presented to be this meticulous and competent planner and supporter, but here he fucked it up so badly. How?