Somewhat untrue. Remember, PC can be whatever you want her to be, do whatever you want her to do. A lot of people are using Folding at home to contribute to the study for a vaccine to Covid-19. Hospitals and labs use PCs as integral tools for tasks, some specialized. We use PC for everything, from education, to specialized military operations. Just because you can play with PC, doesn't mean that's the only thing she can do.
well, it is a good thing considering most tech involved in computers origin that is closed ties with the military . Computers at first are derived for the military then after the war it was introduced to society for commercial purposes.
One of the first and most famous of these, the Electronic Numerical Integrator Analyzer and Computer (ENIAC), was built at the University of Pennsylvania to do ballistics calculations for the U.S. military during World War II.