It's not a deficiency. Laptops can't do everything. Apple can't build a computer that caters to every edge case. That's why I don't complain that I can't play the latest video games on my laptop, or run 50 VM boxes or something.
But I'm not complaining that it can't do something magical and new. I'm complaining that it can't do what the same product could do from the same vendor five years ago.