Why is the minimum row height 23?

From a design point of view, sometimes I like to have a blank row between data, but I don’t always want that row to take up a full space. Is it really necessary to have the minimum row height be 23?

It is a design limitation - historic reasons - We are aware of it. We will revisit at some point - but not a priority right now.

Thank you for your quick response. I can live with it for now but it will be nice to have down the road.