I think CSU must have “dumbed down” their FT-student status in recent years (from 12 to 6 sem units) due to budget cuts. It’s now practically impossible for a CSU junior or senior attending the most popular urban campuses to obtain more than 2 classes at a time (6 units) in their major emphasis of study.
Hence, the “career student” (by default and necessity) is born!
The CSU “system” is now endeavoring to keep all students attending for 6-8 years (and paying $2536++ every semester) so they can eventually graduate with a Bachelor Degree.