The difference is you always can buy USB C headphones with a known good consistent DAC. A 3.5 inch headphone jack serves no purpose in the age of USB C - even my wife’s mixing board has USB C input that she can plug her iPhone into.
Next thing HN folks are going yo want the iPhone to come with a SCSI port.
I think that is silly, I haven't used an SCSI port since I was a tiny child but I use a 3.5mm almost every day of my life.