Remember also the aftermath of Starfleet's Kelvinverse decimation - same kind of thing - real world experience + natural smarts + need for recruits in the wake of the hemorrhage = cutting corners/expediting commissions/training. Plus, a lot is learn as you go - plenty of opportunities out on the frontier to learn new things.
I'm surprised larger ships don't have Starfleet Academy cadet classes, augmented with stops at bases and distance education (a la pandemic), much as they had schooling for young kids on the Enterprise-D.
I'm surprised larger ships don't have Starfleet Academy cadet classes, augmented with stops at bases and distance education (a la pandemic), much as they had schooling for young kids on the Enterprise-D.