Yeah, that is really something that bothers me from time to time. For instance, in communications we count symbols per second and people still use the unit Hz. But, as it was said before, Hz is revelations per second.

There is a problem in general: Units do not refer to what they count. For instance, when you have dashed road markings and you want to quantify the length of the dashes per road length you get as unit "meters per meters". And then people go and say this is unitless since the units "cancel". But for me, they do not: It stays "dash meter per road meter".