IMHO, the standard 16 hour training requirement was set by someone in the General Assembly as a class for citizens who had ZERO handgun knowledge, skills, experience or marksmanship skills.
MSP requires it for one reason- it’s required by law.
There is another, more useful alternative. Take the NRA Basic Pistol Instructor course, or the USCCA instructor class. Become listed as an MSP QHIC and you achieve two objectives. 1) you become training exempt and 2) you become qualified to TEACH the 16 hr HGP course.
Discussed at length in another thread.
With the prerequisites it's likely the long way around. Before taking Pistol Instructor, one must take Pistol and BIT