It could make sense if more information is given, for instance you still aren't very good at using things above your level. In that case, this just sounds like a threshold below which you're so bad with something that you can't use it at all.
Yeah, it just says 'You aren't high enough level to use that.' I just always found it strange, like nonsensical to have a level 21 item be usable by level 1, unless there's no level restrictions in the game (or no item levels). But the game does restrict item level use based off your level +20. Just seemed.. random.