RetroArch team, Team Xecuter, and fail0verflow have been working on the emulation and Team Xecuter are actually working on a physical modchip for the Switch as well. (thenerdmag.com)
While Nintendo has won the battle against the retailer, the outcome itself doesn't mean modchips and the like are now illegal. (gonintendo.com)
Some gamers like to tweak their consoles with modchips in order to add some unauthorized enhancements and features. (pressthebuttons.com)