Why do you say so? Co-evolving organisms/species and their cross-interaction in a large changing global environment is not a deterministic process, or rather is not a process that we can predict with any great degree of accuracy. What things would "look like" is extrapolation, not evidence.
In any case, my main objection to your argument is that you're drawing inferences from an imperfect dataset and them employing backwards reasoning "Well nothing else explains it except theory A". Sorry, but that doesn't satisfy me. I still want to see actual evidence of actual work being done in an actual lab that corroborates the hypothesis. It is pretty much impossible to keep such large multi-year scientific development projects secret in this day and age. There are dozens of people involved, past employees, lab assistants, etc, etc. I work in biotech (I'm not claiming to be any expert on anything) and maybe that's why I'm finding it difficult.