You are right that the basics are often misunderstood but an Intro course this is not! Knowing what prime factoring is can be interesting if you like maths but

You are right that the basics are often misunderstood but an Intro course this is not! Knowing what prime factoring is can be interesting if you like maths but definitely not required to understand on a practical level the difference between symmetrical, asymmetrical and things like CSPRNG vs hashing.