Yes having more knowledge and accomplishment (experience) in anything in life lets you develop more confidence.
Ethicality is different from responsibility though, I think you conflated the two.
Here's one simple one we can probably agree on:
> An engineer is a professional who applies scientific and mathematical principles to design, build, and maintain machines, structures, systems, and software.
As a professional applying these principles to design, build and maintain systems, morals and ethics are not involved in the definition of a professional who does these things. If you want to involve that, use your adjectives and communication and writing skills to add the word ethical or responsible in front of the word engineer wherever you use it. Instead of making up new definitions to fit your egoic desires: i.e. say "Responsible engineers xysz" instead of "engineers xysz" and then trying to project onto everyone that they are wrong or don't understand what an engineer is if they don't automatically assume and engineer must be responsible to be called an engineer. (which imo is deceptive and self-serving in use of language)