In 2014 Apple would sell you a monitor that doubled as a dock which worked great with the RMBP and Apple's own wireless KB and Mouse and even Time Machine.
Today you're stuck with USB-C docks which are pretty awful. Pretty much on par with a Dell or HP laptop dock. The new Macbook Pros are the worst device I have used from Apple.
The thread you are replying to is about hackintoshes. The point of a Mac for me is that it Just Works (tm). If I want to fight with something I'll buy a Thinkpad and install Ubuntu. I have no interest in fighting with macOS, it's only useful to me if it is easy.
No. Their complaints are about the laptop itself. The keys are constantly breaking. The software constantly crashes. We're all a bunch of consulting devs and the 2017 macbook pros have cost every single one of them at least a week's worth of billable hours in the past 6 months. Most of them have gone back to their 2015 models.