No, there is no rhyme nor reason to bans whatsoever. This was the case with the 3DS and is still the case with the Switch. People have been banned for pirating, people have been banned without pirating; people have been banned for homebrew and some for only using CFW. Bans are completely random which works to Nintendo's favor because this way no one figures out a safe way of using hacks.Yeah, still not banned. Not sure how, but there must be a reason for it. Nintendo is very systematic about their bans- if you step on a certain trigger, you'll be flagged for the next banwave or in some cases banned immediately. I have survived all banwaves with nothing more than basic common sense, such as to disable internet when running pirated games.