When I worked at a major printing company, they were not using Macs because people would THINK they were color accurate when they were very much not, and we had a bunch of calibrated Dell monitors around specifically for that purpose.
So definitely more of an urban legend than anything. Apple displays are reasonable, they're decent IPS panels, but they're middle of the road if anything.
People need to buy calibrators. I use the open source ColorHug it runs on Linux so I actually use a live cd and do the calibration. http://www.hughski.com/
I calibrate my monitors with DisplayCAL[0] on Linux.
There should be one calibrator in every office, the difference it makes is enormous.
Yeah Apple is making some very bad mistakes in their software quality, but there are two things that are very essential to the Mac experience that still make it the most straightforward choice.
One key advantage Macs have over Windows is that they run Unix. You can open a terminal and be involved with most of the Linux/Unix monoculture that exists and have access to much the same tools. No VMs and all the hassle they bring to take into account, mostly at least.
One key advantage Macs have over Linuxes is the availability of good quality graphical software. If you like a GUI for Git, the best are available on Mac. It has OmniGraffle, which many regard as amongst the best diagramming software out there. It runs a very decent version of Microsoft Office. Many would argue that - especially for developers - the software ecosystem for Macs is even superior to Windows. And add on top of that is that this also runs on a still mostly flawless out-of-the-box experience.
Sure, I bet most people could switch to Linux or Windows if they wanted to go through some effort. But it's more than a mental lock-in, you give too little credit to the Mac ecosystem. It might not be the obvious best place to be anymore, but it's still great value. As was pointed out before, this seems to be something that Apple is okay with.
I really hope Apple feels this security incident steps up their game - they deserve all the hate they get for this. But the Mac value proposition will barely change for most people, as sad as that may be.
Please note as disclaimer that although I do use Macs sometimes, I spend most of my time on Windows and Linux systems.
Thankfully we are getting there with "Windows Subsystem for Linux." I am using the OpenSUSE subsystem which you can install in the Windows 10 store. It isn't perfect but it sure is getting closer.
But then you have to run Windows. I still prefer MacOS by a large margin. I would move to Linux, but I want Photoshop and more of that without having to start a Windows VM.
Back in the PowerPC days, a large part of every keynote was getting Phil on to press the spacebar so we could all see how much slower Photoshop was at making the poster for Inspector Gadget. Can't help but feel like this was where a lot of people cut their teeth on this opinion. While Mac OS 9 and its users (niners) are a tiny minority now, I suspect a lot of those shops moved to Mac OS X.
But that was all a lie about the speed of Macs. It was absolutely smoke and mirrors. Intel CPU blew the doors off the Power PC. Case in point, Apple switched from Power PC to Intel and saw a huge speed increase. The "Cult of Mac" was 100% anti-Intel and people would tell me that the G5 Power PC was the fastest personal computer you could buy. All lies and dishonesty. Apple for years caused huge animosity of "Apple Fanboys" vs Intel.
Most people don't realize but the vast majority of Video Editing was Windows based till about 2010 when Final Cut was considered best in class (I can't stand Final Cut myself but to each their own...) The vast majority of video editing is now Premier due to Apple's handling of Final Cut Pro and the lack of support for the Mac Pro (They usually sit in back rooms as expensive file servers) Also most people mentally think that somehow Apple is better for design but the software runs just as well on Windows.
The iPhone and the money spent on software is what is keeping people these days. But whenever I talk with my friends they are certainly not thrilled and zealots of Macs anymore. The vast majority of my video editing friends are getting really frustrated with what they call the ceiling. Do you really want to be editing full time on a lap top? The Mac Pro isn't a real solution for full time editors.