Because it is labeled as a “creamer” under USDA regulations they have to make clear it is “non-dairy”, which means it has less than the required amount of dairy product to be deemed “dairy” (because lots of creamers are 100% dairy).
Similar labeling regulations apply to “juice”– which has to be 100% fruit juice (of some kind) — if it is less than 100% juice, it is a “juice drink” (typically with the percentage of juice clearly stated).
The purpose of this is to prevent people from thinking they are getting 100% cream (or half-and-half or whatever).