Can You explain more? There actually isn’t massive changes from IV to V. The massive changes were from III to IV and V. Personally I dislike some of the changes and like others. The focus on spectrums is one I dislike. Not a fan of everything is a spectrum. I think precise diagnosis is important and spectrums make things more vague.
Dsm really isn’t taught in an intro course. It’s introduced but the first you’ll really approach it is a masters course or a doctorate level course.
I not aware of any state that allows someone with a bachelors degree to diagnoses. Most states required a doctorate to be a psychologist.