If 99% of the people using it don't know what a Linux is, I think that means we've totally won because it means that Linux got easy enough for them to use!
Really though, I think it's for you to decide. It's not like there's a standards body with a rigorous criterion on if a given year is "Year of Linux Desktop", which is perhaps OPs point. Personally I think that 2013, when Dell first started selling the XPS 13 with Ubuntu was the Year of the Linux Desktop and I personally think that we've actually lost the plot in subsequent years.
Really though, I think it's for you to decide. It's not like there's a standards body with a rigorous criterion on if a given year is "Year of Linux Desktop", which is perhaps OPs point. Personally I think that 2013, when Dell first started selling the XPS 13 with Ubuntu was the Year of the Linux Desktop and I personally think that we've actually lost the plot in subsequent years.