> External Monitors
Plugging in monitors in linux today frequently does not behave as you expect. The chances of errant behavior is significantly higher on linux than any other operating system. I can't speak to apple computers not working with projectors, but it seems like he's comparing apples to oranges here.
> Software Installation
The "One True Way" of installing software is still the case in linux. Installing outside of the native package manager's repositories is discouraged. Installing of any software on mac is 'discouraged' in that you need to authorize just about every installation you do on the app store. Homebrew does not require sudo to install applications, though GUI applications will generally still need an okay from the user to open and use. The outlier in software installation is Windows, where it is still encouraged to install executables downloaded on the internet.
> Hardware comaptibility
Linux and MacOS both bake hardware compatibility into the kernel. You will still run into weird cases where a display port out on your graphics card won't work with linux for some indiscernible reason. This is admittedly significantly better than it was in 2000, however.
> Laptop features
Linux didn't have dedicated laptops in 2000. The fact that they lacked USB ports has nothing to do with Linux.
Current macbook pros have 4 usb ports (other than entry level mbp 13). Retina macbook pros had 2. I'm certain he's talking about usb-a ports, however. This isn't unique to Apple laptops, however. Most PC laptops manufactured today lack more than 2 usb type a ports. It's very difficult to find.
> Advocate behavior
It's pretty remarkable how someone can be so condemning of condescending elitist behavior while simultaneously being a condescending elitist jerk.