I think that's a separate phenomenon. Renewables are often cheaper than fossil fuels, which is great.
But to avoid pollution, we must actually leave fossil fuels in the ground, unused, unburned.
You know what is the big green initiative at fossil fuel companies? Using renewable energy to power fracking. The worst case scenario used to be that we only leave fossil fuels in the ground when the energy required for their extraction exceeds energy obtained by burning them. Now, the range of scenarios has expanded in both directions. We can leave fossil fuels in the ground because it's cheaper to do renewables. But also we can extract and burn below-energy-breakeven fossil fuels.