That's nonsense - you're conflating the discovery of the main drivers behind the ice age cycles that began at the end of the Pliocene (~100,000 years per cycle

That's nonsense - you're conflating the discovery of the main drivers behind the ice age cycles that began at the end of the Pliocene (~100,000 years per cycle over ~2 million years) with the discovery of the effects of human fossil fuel combustion. Yes, we're past the historical warm maximum period of this cycle and we'd be steadily (and very slowly) heading into another ice age over the next 70,000 years or so - but again, fossil fuel combustion and the injection of mass amounts of fossil CO2 into the atmosphere have radically altered that trajectory. This is not hard to understand, unless you're deliberately trying not to.