As far as I'm concerned, it's all down to 'Redundancy'. But mainly due to COSTS/Savings...
You can't buy a Laptop now with a built in CD/DVD drive, to save costs and for 'room'. People/Companies made them
redundant, not just due to technologies today, but to save money. Similarly, traditional USB 2/3 ports are becoming redundant,
even though 99% of current users still want/need them!! They all now push for the new Type 'C' connectors, not only because
of their apparent usefulness today, but to shift hardware to external devices externally, and save more money!!