Kinship Terminology

As I dig into our family history, I find this chart particularly useful.  One memorable takeaway is that "first cousins share the same grandparents, second cousins share the same great-grandparents, and so on".  But why a "first cousin once removed" is the appropriate title for both the children of my first cousins and the parents of second cousins is beyond me.  Just seems lazy.

https://www.findmypast.com/blog/help/kinship-terminology-how-we-refer-to-our-family-relationships