I think the point is valid. One of the things "pros" need is ports. Ports that hardware assumes you have because its standard on most machines. This thing about ports is that you don't need them unless you do. Maybe you never use ethernet, but a lot of people do. Maybe you need to plug in to set up a router. Maybe a hotel room only has ethernet. Maybe your office environment requires ethernet.

I've been using a mac at work for years and ports have always been a pain. Need to plug into a projector? Connect to a TV? More than 2 USBs? As often as puling out adapters, the solution is use someone else's machine.