By the 4th Grade I had learned that when someone made an assertion, it was up to them to provide some factual support. Since the internet expert is unlikely to be able to do that, I'll attempt to correct uninformed opinion on one related claim:
On carbines for "cooks and clerks": if you look at the Feb 44 T/O&E for an army infantry battalion, you find 27 MOS with 'cook' in the title; 8 with 'clerk'; and 15 with 'driver.'
Here's the scorecard for authorized personal weapons for the above 50 GIs:
Carbines - 0
Garands - 50
From an incomplete collection of army WWII T/O&Es, I can make this general observation - at the battalion level and lower in combat and combat support units (the latter including arty, AAA, TD, chem mortar, etc. - so emphasis on 'combat' rather than 'support'), the vast majority of cooks, clerks, and drivers were issued Garands, the exception being where the entire unit was equipped almost 100% with carbines (as in arty battalions).