Time Stamp File Name of Photo's?

Why can't my iPhone just time stamp photo's by using numbers in the file name to represent year, month, day, time? When I try to get this information I have to go select that field in my file explorer after the files have been transferred to my computer. Then I get contrary information in multiple fields. Date modified is identical to Date created and Date taken is AFTER Date modified and Date created. See attached photo. Clearly I couldn't have created or modified the photo file prior to it being taken. Now I can't trust that the Date taken information is accurate. Very frustrating, so why not just put the time stamp in the file name and save us the headache?