Wrong! Tons of "regular users" want to transfer their image library from their phone to their PC. This is usually dozens of GB of data. Very often the tranfer (from iphone to cheap windows laptop via oxidized cable) is not even completly successful.
My usual recomendation for these people is to buy icloud storage ($$$$) and sync the images over the web, because this is faster an less error prone.
EDIT: therefore the average amount of times anyone who buys a non pro iPhone plugs it into a computer with the intent to transfer data to it is almost 0
iPhone photos are usually in HEIF, and an on-the-fly conversion option that fails after hundred or so photos is enabled by default. Image transfer on iOS works half decent after you find that toggle.
My usual recomendation for these people is to buy icloud storage ($$$$) and sync the images over the web, because this is faster an less error prone.
EDIT: therefore the average amount of times anyone who buys a non pro iPhone plugs it into a computer with the intent to transfer data to it is almost 0