Life today behaves in a way that can be explained by
each organism having the genetic information necessary to produce varying offspring that can adapt to environmental pressures.
Observation of life today does not show that additional information must be added to the organisms’ genome in order to adapt. Nor does this observation prove that additional information is occurring.
This addition of information, a lot of information, is required for the single cell to develop into a being that can concoct such a theory.
I think the citrate-eating bacteria disprove that assertion. You start with bacteria that can't eat citrate. After many generations, you get some who can, while most still can't. The simplest explanation is that those who can evolved that ability--acquired new information, if you insist. If you want to claim that the information was already there, it's up to you to find it in the original population and explain why it only started working in one group and not the others.