In my experience, when we talk about software (hardware issues are always a thing on less used systems) Linux is the less black-box of these three OSes. If you

In my experience, when we talk about software (hardware issues are always a thing on less used systems) Linux is the less black-box of these three OSes. If you have a non trivial problem with Windows or OSX OSes or apps, you're out of luck. With Linux, you have the tools to reach the root causes. Or at least, that used to be the case. New apps in Linux (particularly in Ubuntu) want to be as "friendly" as Windows or OSX, so they hide how things works, and put layer over layer of abstraction to the point where nothing is obvious anymore.