Earlier quoted context omitted.
I actually saw this last night and initially had the same reaction but had some time to think on it. Remember, for a lot of people taking a pregnancy test is incredibly stressful. Reducing the complexity of reading by outputting a less ambiguous result has a lot of value to some people.
But as a society, do we want to generate additional waste for a bit of comfort ?
Not only comfort. A lot of factors early on in pregnancy affect the health of the unborn child. Knowing when your pregnant will help you stop consumption of e.g. alcohol.