I agree with approximately half of this article.
There are two factors limiting sales of Macs. 1) lack of updates; 2) prices. I love the idea of an ARM-powered Macbook at €800 and I would buy one if only out of sheer curiosity. But when a 3+ years old Mac Pro costs the same as it did in 2013, or much more if you're in Europe or, worse, UK, of course it's not going to sell. So it's not going to be updated. So it's not going to sell.
iMacs should NOT come with spinner drives in 2017. They just shouldn't. At all. If you see this gorgeous piece of technology, bring it home having spent €2129 on basic config of the 27" and discover it takes minutes to start it up and 30 seconds to open an app, you are not going to be tempted to get another one, especially as it's near impossible to upgrade. My husband needs a new iMac badly, but the config I'd be willing to allow him to buy (basic 27" 5K but with 256 GB SSD) costs €2369. We're not going to spend €2369 on a "new" iMac that hasn't been updated for 1.5 years. Therefore Apple is losing a sale. So they have less incentive to upgrade them (I don't imagine our one purchase would make a difference, of course, but I don't think I'm the only one). Repeat. If either the price of basic 27" retina iMac dropped significantly since its release, we'd have bought one by now. It didn't.
Macbook Pro 2016 is not a computer I would want to buy. Because of price and dongle life. (Yes, I know, it's the future, dongles aren't so bad, etc.) If the TB version started at €1449, I'd possibly be tempted. At €1999, with 8 GB RAM that can't be upgraded? No. Thanks to Brexit I got the 2015 rMBP for approx. €1200 including AppleCare. I love having the new and shiny. I'd like thinner and lighter, sure I would. But I don't love having the thinner, new and shiny enough to spend 2000+ euro on it. Perhaps 2nd or 3rd gen will resolve the sticky keys problem, improve battery and drop in price. Perhaps there will be a vast amount of cheap USB-C accessories available. I'll think about it then. I don't actually care much about Kaby Lake, Coffee Lake, Whisky Lake or Ribena Lake. I'd like a much faster GPU in the 13" model and a microSD slot, please – to me, needing an SD card reader when I didn't need one previously is a major downgrade and if a microSD card can fit in my phone, I am sure it can fit in a rMBP. Is it going to happen? Don't think so.
I'm still going to hang around this forum because I love my Macs and, well, as far as I am concerned there is no competition to Apple laptops. I'm looking forward to seeing what they come up with next. I'm just not buying it – for now.