Yes these reasons are all true, even today. App Store also makes software purchase much easier.
Apps for OSX are usually designed better, much more convenient than apps on Windows, especially the apps for designers. the convenient, native terminal makes it possible to use almost every piece of software from Unix/Linux. Some OS features are focusing on convenience as well, such as the spotlight. MacBook Pro has the most usable touch pad which can completely replace your mouse. About ten years ago there was an article claiming that “Every Developer should have a MacBook Pro”, which listed a bunch of reasons, for example:
