In other words, a tradition argument. Not a reason on its own to keep inferior things around. Especially in the tech sector.
And btw, USB-C is an evolution of legacy USB. It also incorporates Thunderbolt and gives features such as high power, reversibility, good tactile feel and amazing bandwidth. Only a Luddite like yourself would insist on a legacy USB port on the new MBP, a design which has to last until 2020.
Ok the Luddite comment aside, I agree with your assessment of usb-c and as I've said before, I'm all for latest tech my self (typing this on my iPP which is my daily driver, you can't go any more port less than that, I've sold my rMBP to fund this as it was enough for my needs at the time, but over the year I've developed new needs due to my changing circumstances and hence I'm on this thread) but it's not a question of tradition.
Tradition, as you assess, often is a roadblock for progress, as it is a set of customs and beliefs that are passed on generation from generation. It has little to do with choice or practicality but more with familiarity and comfort, or sometimes the sheer desire to preserve a way of life.
The debate surrounding backwards compatibility on the new rMBP is about business and what makes sense for Apple to do. Like many have pointed out, the rMB a consumer oriented device comes with a single usb-c and an adapted as most consumers nowadays (I'm basing it from teenagers onwards) don't use or need a usb peripheral in their daily workflow. Even at uni I don't see any necessity for a usb peripheral unless you're in a more specialised subject that requires them.
That said, the rMBP is intended for pros. And given that a lot of the 'pro' market or the enterprise market is conservative in attitude in general, and I agree that can be taken as tradition. But it's not a 'tradition argument' to say that because virtually every peripheral in a workflow uses usb-a, Apple should include innate backwards compatibility. Given the current situation of the workplaces of most target customers for the rMBP, it would be plain stupid for Apple not to offer some sort of an easy way for the peripherals to coexist. A dock is one potential solution but that partly negates the portability aspect for people who require usb-a on the go, you'd say use an adapter, but in the days of carrying a phone instead of a wallet to pay for stuff, do people really want to carry more things around?
For Apple it's a game of balancing how far the can push this, I would say that they have to offer dual support as if they don't, they're most likely to lose a lot of potential customers. It's not like the audio jack going from the iPhone 7, as the user base for the iPhone has no choice other than the iPhone if they want to use iOS, which is very different from android. In the pc market, with the recent improvements in Windows 10, an increasing number of people would consider jumping ship if push came to shove.
At the end of the day, our discussions here are just discussions and Apple will do whatever the heck they want cos they're Apple, I enjoy active discussions but name calling doesn't really have a place in a Mac forum where we're all meant to be adults
