It's much nicer targeting Linux only from a developer standpoint than all 3 popular operating systems and all of the security vulnerabilities and toolchains and quirks for each. If you have the luxury of having a robust build pipeline for all of your targets with absolute confidence you're convering all of your bases then I applaud you. But from a developer and an end user point of view, if all I need to pursue is one download, regardless of platform, and that executable bootstraps itself and works, we would all be happier.