Not necessarily. All a Kodi is, is a streaming device. True, illegal streaming can be watched on it, but there is a TON of free, legal streams that can be watched on it. For example, TWIT TV ( a streaming channel with Leo Laporte that has a variety of programs concerning tech and computers), Sky TV news out of Britain, YouTube channels - I live overseas and was able to watch the debate through Fox's live stream on Youtube.
Just as a legal vehicle can be used in the commission of an illegal crime.
Kind of like claiming that a glass is a device that gets you roaring drunk, or a spoon is a device that gets you morbidly obese....