By that logic Nintendo will go after Ubuntu and Fedora too
Neither Ubuntu or Fedora distribute Yuzu/Citra by default and neither platforms exist exclusively for the emulation of Nintendo's systems using what are apparently radioactive emulators. Neither Ubuntu or Fedora advertised that they include Citra, and neither featured screenshots of it prominently along with detailed wiki pages on how to use it.
Ironically enough, maybe the reason why Nintendo is so litigious is because the OG Big Tech (IBM) hit Japan really hard with lawsuits in the early days of the industry.