On your first point, I agree, the medical comparison did not come across as well as I hoped. The intent with "branching out" past engineering in the text was to highlight Software Engineering as a profession with ethical responsibilities. Engineering is a closer comparison - but medicine or journalism is much more mature in how they think about ethics, in my opinion. Engineering disciplines are apt to think of the toolmakers dilemma as solved by delegating responsibility to the user.

Which gets to your second paragraph which, while I really like how you've worded it, I disagree in the general case. Yes, we should build technology that is unbiased and pliable. But I think the example of TCP/IP or HTTPS illustrate that that is too simplistic. We are responsible for building technology that answers to its users, and highlights or removes the ability for users to be abused when interacting with it.