>This being you would classify as "no worse a threat" than any living being known to man? Is that "putting aside emotional pressures and considering the results"?

I mean, any man sufficiently ill-willed can certainly do all that today. I am unbothered, to say the least; I have better things to do with my limited time.

>what other explanation is there for the mass extinction of most animals after the Anthropocene started.

You're wildly overestimating the effect humanity has on the ecosystem, many species also went extinct before we showed up. The species we see today are merely a very small handful of all the species that ever graced this planet.