What is "incorrect"? Companies will change parts due to customer satisfaction, too. That's not an admission of wrongdoing. It's an admission that they didn't meet customer satisfaction the first time (and yes, you could jump in and say that not dying is satisfying, but that's not my point).
In the case of the ignition switch, there's very easy plausible deniability. The newer, customer-satisfying version has higher torque. Customers have come to expect resistance when they turn a key, and they identify a too-easy-to-turn key with toy-like "cheapness." If the new key switch module can add less than 1 per unit in manufacturing and also improve customer satisfaction, then it's absolutely justifiable in this situation.
There is a huge emphasis on closing efforts these days. The result of all of this work is that I typically slam car doors closed, because my old-man expectation is that the door is heavy and needs a lot of energy imparted into the action. Most customers, though, appreciate easy-to-close doors. Car makers go through a lot of effort to compete with each other on this detail. It's not at all related to safety, but to customer satisfaction.
Of course "customer satisfaction" leads to increased sales and profitability. It's a downright disservice to spread misinformation that manufacturers (of any product, not just cars) only compare bottom-line price, because the successful ones realize that they cannot compete based *only* on price.