I don't think the purpose of a law is to deter people who are either incapable of performing the math behind choosing to violate it, or who have done the math and decided risk<reward.
The law is there for folks like me, tbh.
I like to shoot critters (when I'm not having a moral crisis over animal sentience). I have ample opportunity to shoot critters in a way that, if commonly done, would probably lead to depopulation issues. I also know that the laws are there, so not everybody is going to do that. I also know that realistically, the odds of me getting caught are low. I'm like Kyler in that I don't see a moral difference between shooting a deer in July vs October, or at 2am vs 2pm.
So...I'm squirrel hunting 3 weeks from now after deer season ends. As I'm slipping along a creek bottom I see a nice buck. I'm holding a .22wmr. I've hunted this spot for 10 years and have never seen a game warden. Killing, eating, and admiring the horns of this deer involves nothing more than pulling a trigger and (if I want to play it safe) coming back at dark thirty tomorrow morning before anybody is stirring to retrieve it. Doesn't sound too bad.
But, lingering in the back of my mind is the knowledge that our society has decided this is a no-no, and that it pays for people to enact state-sanctioned violence against individuals who disagree with the verdict. The risk of getting caught is low but never zero, and if I get caught, there's a certainty of a fine. Minimum here is to my understanding $250 for hunting out of season, and you'll probably catch hunting with an prohibited weapons charge as well ($50, I think?) as well as another charge or two that you may or may not think is really close to being a double-jeopardy charge (possession of illegally harvested game, for example). So a minimum of a $300 ticket, possible confiscation (probably temporary, but still a huge annoyance) of hunting equipment, definite future hassle of having that warden know you as a guy he pinched before, earful from the wife, loss of reputation, etc, etc.
For somebody who is reasonably rational and has some measure of impulse-control...it's less stressful to just watch that buck and have something to look forward to next October.
Most laws, if we're honest, aren't about making sure that everybody behaves perfectly all of the time. They're about making it so that most of the people behave mostly correctly most of the time.
With some folks, and I'm afraid the perp in question may be one, there's something keeping them from trodding the same path and reaching the same conclusion most folks have. I'm doubtful that the answer is more draconian consequences.