Torrenting is a pretty standard, official, way of distributing Linux ISOs. Linux' license also doesn't really stop anyone from doing so, as it very much wants its users to share it with others (GPL v2, see the 4 freedoms of the FSF). There could be problems distributing e.g. Red Hat-owned stuff (trademarks, copyrighted things, non-FOSS software and such) without permission, but Linux itself is completely legal to share.

Torrenting also isn't illegal by itself or a direct link to pirating, it is just a very common way of sharing pirated data.

No, in the way that advertising that your product can play a few homebrew games when it already can play thousands of Steam games makes no sense. It's obviously to hint at playing Nintendo titles.