Is there empirical evidence that licensed engineers actually take advantage of their moral agency and refuse to perform unethical acts more than the so-called software engineers?

In 2008, in the US, almost 30% of the workforce had a professional license, up from less than 10% in the 70s. Has there been a similar increase in the moral agency and ethical standards in the country?

Replacing a wage-fixing elite with another is not my idea of a solution, to be frank.