See, I think it's great specifically because it shows that she's changed. She's been through so much shit, and it's gotten to her.
Except it's not. Steve said that line because people closed to him (mainly his father) failed him and his mother, and he was on his own ever since he was kidnapped by Umbrella; in his case weapon was the only thing he could rely on (at least until he met Claire, but he still considered her a hindrance back then). At that moment in his live he didn't care about anyone other than himself.
Claire, on the other hand, works at NGO where she helps victims of biohazard outbreaks and BOWs attacks. She works in a team of people who also wants to save the world through non-combat measures; moreover, at that specific moment, she was working together with Moira. So how exactly does that line work in this context? This was nothing more than a failed call back.
I'm also going to throw out an extremely unpopular opinion but it just confirms how Chris Redfield and Jill Valentine are utterly boring characters who should just be retired at this point. I don't feel that they have anything to add that are worthwhile and relevant to the franchise, especially when you have other characters like Claire, Barry and Leon who are much more interesting than the one-dimensional super-heroes that Jill & Chris are.
But Claire, Barry and Leon are one-dimensional super-heroes as well:
- Claire is the mother figure, the care-taker.
- Barry is the family guy who likes big guns.
- Leon is the cool government agent who loves Ada.
They might be fun, but there's really no depth to those characters. Chris is the good-guy military guy who wants to protect his squad but fails at that every single time (seriously, even Carla points that out), which makes him somehow interesting... until Capcom started to repeat the plot again and again (RE1, RE5, RE6 - twice, RE7...).
Out of all characters, unfortunately Jill is the blandest one, but that's because she wasn't given any solo story-driven game where she her character had the chance to develop.