I'm a nuclear engineer and also unlicensed and also know very few who are, but...

> for me to call my self a "Professional Engineer", I have to pass a test almost wholly focused on Civil Engineering

isn't true. The FE exam has a number of discipline options, including Electrical and Computer[0] and the PE exam is then done be discipline.

[0] https://ncees.org/wp-content/uploads/FE-Electrical-and-Compu...