With the exception of drivers (currently), yes. But almost everything that exists is targeting developers and server infrastructure. If open source graphics infrastructure were in such a state, no one would even be running a GUI desktop on Linux, for example. (and things like Steam on Linux wouldn't be possible)

In fairness, I'm coming at this from the standpoint of someone who uses Linux as a daily driver on the desktop so I know I'm an extreme minority. It's also not lost on me that I'm probably also an extreme minority within that extreme minority...