@irenes @mcc
It's probably more simple than that. A much higher proportion of Linux users work in jobs related to software development or deployment, or have that as a hobby. That background is likely what attracted them (us) to the OS in the first place.
And so a much higher proportion know that filing bug reports is important, and a much higher proportion is familiar and comfortable with the process.
@jannem
The Golden Rule in action: "Well, I'd certainly hope somebody would file a bug report to let me know about an issue in *my* project!"
@irenes @mcc