Good thing it's the third paragraph of the link provided then.
> Wrong. Bugs exist whenever you know about them, or not.
> Do you know how many of these 400 bug reports were actually platform-specific? 3. Literally only 3 things were problems that came out just on Linux. The rest of them were affecting everyone - the thing is, the Linux community is exceptionally well trained in reporting bugs. That is just the open-source way. This 5.8% of players found 38% of all the bugs that affected everyone. Just like having your own 700-person strong QA team. That was not 38% extra work for me, that was just free QA!
In my anecdotal experience with my game, I've gotten one Linux-specific problem on my end (video-related) and quite a few bugs that affected everyone but were reported by a Linux player.
There were a handful of problems that were specific to the player's Linux setup, but that happens for all platforms. Many Windows crash reports are only resolved by "problem must be on your end, please reinstall GPU drivers, turn off weird settings in your driver, do not force gsync on" etc.