I would say

Nah
He scared of them more than he care

Thats my point ig, he didn't "fix" anything bc they didn't get proper love and care they need to get better. She literally misunderstood that she took her not to be a weapon but to have a normal life like its not his fault she is delulu but if he was there for them and not hiding maybe they would've some sort of normal like but thats kinda hard to say bc they still would've been doing it behind his back

I think he does care for them but it's justified that he's scared of them. He lets them be in an environment in which they had gotten love. And he himself tried to be caring in the letters since he was scared of them killing him.
And I don't think they would have become normal. That girl was already broken to the point where she saw every message as a weapon. The problem is that all 5 of them manipulated themselves to think they are weapons. Him coming to them would have probably just make it worse or even kill him since he wasn't their ideal

You're right but I think that's why I find it interesting. The Mc only see them based on the game and where they are already the villains so I think it's given he's scared asf because they are no longer game characters and they are already literally walking disasters. I kind of like it that he's not like other mcs that think 'Oh I could totally fix them' type of thinking and love bomb these villains. His reaction and decision is valid and also I found it refreshing that it's another way of dealing of different people when it comes to being isekaid in the games or novels.