I think the quintessential scene of Jimmy's worldview and morals come at the scene with the videotape and his entire response to it and how he responds to characters expressing dismay at his actions.
The first significant point of interest is his scene when Cliff and the partners are trying to discipline him. He keeps pointing out how the video he made worked and is getting calls. To him, that's the only important thing, not that he made the tape behind his boss' back nor that he runs into potential ethical/legal violations that will reflect on the legal firm he works for. And his response is that he genuinely seems baffled by what they're angry about. "Don't pretend you don't know what you did wrong." one of them says. "....I don't." He responds. This is supported by how he casually tells Kim that he forged false evidence to get a client off and Kim has to tell him that he can't make her culpable for things like that.
Then he hears about Kim getting in trouble for his actions. He's outraged and as a result wants to go up to Hamlin and tell his face off (because apparently he thinks that'll get him to back down) and Kim has to straight up threaten ending her friendship with him if he tries anything. He just seems upset that people are getting angry with him when all he's trying to do is help.
Here's the 2 main things I get out of this:
1. Jimmy doesn't seem to understand why laws exist. He understands that they do, and that people follow them, but when they get in the way of what he wants, he genuinely doesn't see the point of them, why anyone would obey them. Which is why he doesn't understand why the heads of Cliff and Main are mad at him, because as far as he can understand, he gave them what they wanted, so what the hell. Same with Kim. He didn't see a problem with sharing his illegal activity with Kim until Kim told him it was a problem.
2. He is incapable of seeing what the ripple effects of his actions. You can argue that Hamlin is being a dick, but his logic for disciplining Kim makes sense in that she went out on a limb for Jimmy, and pushed him to go out on a limb for Jimmy, and now he looks bad in front of Cliff and Main for doing so. All the heads of Legal firms seem to operate on the power of their reputation. Cliff said that their good name is worth more than any one case, even such a case as Sandpiper which is worth millions. Since all the legal firms seem to agree that reputation is paramount, and Jimmy's actions have damaged the reputation of everyone involved, perhaps Hamlin's disciplinary showing makes more sense. He may just have to do it as part of showing that he properly disciplines his employees and that he takes the bad judgement call he made in recommending Jimmy seriously. But even if you don't agree, the point is that in chasing the immediate end, Jimmy pays no attention to the indirect effects of his actions, and is actually baffled and outraged that Hamlin would punish Kim. Because while he might not see any connection himself, he just never thought of how other people would see it. Again, he doesn't seem to understand that people do not see the world as he does.
As a result of this, he does things that are well intentioned, but he doesn't see that they're actually damaging. Which is why the whole Mesa Verde thing exists. To him, Kim was being unfairly deprived of a prize she 'earned' (treating Mesa Verde as a commodity to get rather than a client with a right to choose their own representation for their own reasons), and all he did was make Chuck look like a bit of a goof by having him make one little typo. That's how he sees things and that's, I think, why he is as outraged over Chuck entrapping him as he is. "This is why you destroyed our family? For what?! For nothing!" As he says, he just assumed Chuck "Would think 'Oh crap, I made a mistake' and go on with my life"
He doesn't see that he damaged both Chuck's personal reputation as well as HHM's (something hugely damaging from how it's presented in the show), cost them an incredible source of income, and did so by betraying his moral duties as a law officer by defrauding an innocent third party. There doesn't seem to be much reason to commend him for doing it with the air of a guy trying to do something nice for his girlfriend. If anything, that only gives Chuck's argument more credence, because not only does Jimmy break the law, he has no understanding of it's importance.