Also, statistically, a lot of Linux users are more technically minded and capable of identifying and reporting issues. This will naturally lead to higher reporting numbers, skewing stats.
Linux users are participants. We choose purposely this OS, proactively download, install and configure it on our computers, we chose it because it’s FOSS, and we are happy to report bugs because we have the hope it will eventually get fixed for our own benefit. We all know that Linux strives because we are few (or not so few) to care about our OS and any help counts even if it’s just reporting a bug. This mindset extends to the whole FOSS ecosystem and even some proprietary SW like games ! Because we want those games to run well on Linux and therefore report bugs to developers. And this is why I love Linux and FOSS so much. It’s wonderful :)