I think the "creative vs mechanics" aspect is being argued here so unless you disagree, I don't see a reason to continue.You are confusing planet types. Your example is a landable planet with thin ammonia atmosphere with extremely low levels of bio life which is nothing like or comparable to an ELW or Ammonia Gas Giant that has a probability of being covered with abundant life, as indicated by the FSS scan.
I know what the DSS does. The FSS finds X number of bio signals. The DSS shows where each type of plant could be on the planet, but it also shows which types of plant could be there. So, are you saying every planet in the galaxy with similar conditions will have the same life forms? Is it possible to FSS scan a planet with conditions that would sustain life but doesn't have any? If you did that and hit it with the DSS probe, would it show you where this life could be?And I say again: The DSS surface scan does NOT indicate where bio is on a planet surface. It maps where the surface conditions meet the programmed criteria.
The bio seems to mostly have common biological divisions with plants seen on Earth. That Earth data might be enough to distinguish phyla, but maybe not enough to establish species. Plus I have a hard time believing settlements were built on planets in the bubble with many of the bio types present but no one noticed or captured them, even agricultural or botanical sites.Edit:
A much better question is how does the DSS know the "pogrammed criteria" for bio that has never been discovered by anybody in the Pilot Federation? Are we only finding bio that the Pilots Federation already know about and skipping any other life forms that might exist?