Yes, but most of them aren't running GNU and have signed boot with no ability to disable it. Very shallow victory. Could turn into FreeBSD tomorrow, and very little ground would be lost.
>There are more computers running Linux
You did not address the claim you replied to. Users get compromised, and users use windows desktop.
The number of DB clusters or whatever running *nix isn't relevant.
You could configure all manner of security settings on Linux, of course, but on most Linux distros they're all left unconfigured.
Linux on the desktop is the least secure option out of Windows and macOS, barring RHEL with it's SELinux policies which probably put it ahead of Windows and macOS as well.