Well, they may have saved significantly more than $100 (or whatever a Switch costs) by having this software available. There certainly is precedent for compensating your open source contributors. When VA Linux had their IPO they granted options to buy 100 shares to their software contributors, which turned out to be worth tens of thousands of dollars. Red Hat had a similar program.
It is 65 lines of Javascript that's mostly boilerplate. I doubt it saved them significantly more than the cost of manufacturing + shipping a Switch, or that they even used it directly. More likely this was just pulled in as an indirect dependency.
