Thanks for testing it.
And yes, we're talking of dependency. To github, to some VM software, to any company. In fact, we're humans and to live we need dependecy on others, since we can not (or historically choose) to don't do everything by ourselves, specialize and evolve in that way.
That is good, but also gives us the freedom to choose our dependencies, well... the thing is that we're not alone in the world! So if people choose YouTUBE to upload his videos, and you want to see them, doesn't matter if there are alternatives, because the video are there. The same with the users, most uses Windows, and you as a developer can ignore it, but is not as simple.