Funny you would mention juvenile posturing.
All you have done is say “look at me,,, i’ve worked with bodies”,, and “bodies are gross sometimes”.
But you havent offered a single rational argument against why the gross bodies were disposed of with the banana peels and diapers. And why the leaders of this office didn’t have the sense to suggest a more appropriate solutions.
You are new, it will take more than puffery to prove your case. You could start by explaining the county dump made more sense than the small respectful mass grave that would be required for the ashes of a few thousand. The volume is not that large.