Yes dear, the exact point. So how can they define the usage is unlimited for 1 household, which could be any number of people using data.
Take for example the 6 person household (Mom, Dad, 4 Children) - all 6 actively using the internet, streaming, gaming, downloading, etc etc.
vs.
2 people living in 2 separate townhouses but sharing the connection. (Assuming each of these 2 people use the same bandwidth as 1/6 of the household example above).
The first is fine but the second is not?
Thus it is an arbitrary definition that gives ZERO idea of how much bandwidth can be used before the non specified FUP kicks in.