I have personally seen trichoderma on perlite (green perlite). Granted it isn't being broken down, but that is not its purpose. It is only there because it is porous and holds water. It is also perfectly natural, as far as I am concerned. Really it is just natural glass that has been further heated to more extreme temperatures so that it expands.
As far as your fecal ramblings go... No manures sourced from any omnivore would be organic anyways. Only from strict herbivores. Animals such as cows for instance, or chickens; they have plant based diets, is their manure not itself plant based? Beyond that manures are typically composted specially, or pasteurized which would kill any pathogens.
Ultimately, the majority of most natural (organic, vegan, whatever) fertilizer ends up being the result of another organisms excrement. Bat guano from bats, vermicompost/worm castings from earthworms (which have gizzards), kitchen compost from a great plethora of insect, bacterial, fungal, etc decomposers.
I mean the whole process of digestion is largely the result of a symbioses between other micro-organisms (flora) that are alive in each and every animals gut; helping break down the plant matter they have directly consumed. Thus chicken and cow manure is indirectly a result of those microbes breaking that plant material down.
All this really sounds like is a rehash of organics, only more finicky and minus any manures or excrement from any organism larger than an earthworm.