Personally, I don't care about USB-C replacing USB 3.0, or the introduction of the new Touch Bar. The problem is the pricing (that Touch Bar is costing me $700-800 on top of the equivalent 2013 MacBook Pro model). The removal of the physical escape key and the inexplicable removal of the 3.5 mm jack on iPhones does not help to relieve fears that Apple has completely lost control of basic sense as to what their professional users want and need. The MacBook Pro line has fallen into the same category as the MacBook Air. It's supposed to be a professional machine, but it's now being specced to the lowest common denominator, meant for any average consumer.
For some of us, Linux is not being transitioned to with enthusiasm. We do not consider it a drop-in replacement for OS X, and already pre-emptively regret the inferior keyboard and trackpad we'll get on the OEM PC laptop manufacturers offer. Honestly, what the hell is with PC manufacturers that still include the TrackPoint™ Style Point, Nub, Nipple Mouse, Clit Mouse[1]?!
tldr; Apple is alienating its professional users. Windows is flat out unusable as a Linux-based developer platform for us. Linux is simply the only remaining alternative. Frankly, it's not "good enough" - it's simply the only remaining alternative when you can't reason spending $4,000+ on a laptop you actually do still want to buy.