Fossil fuels is a psy-op.
See Abiogenic Deep Origin of Hydrocarbons and Oil and Gas Deposits Formation by V. Kutcherov.
https://www.cnn.com/2023/10/29/climate/white-hydrogen-fossil-fuels-climate/index.html
tl;dr: large deposits of cargon neutral hydrogen gas may exist, possibly in sufficient quantities to replace our use of CO2 producing fossil fuels.
I'll bet you that if this turns out to be viable – a wonderful miracle that would allow our industrial civilization to continue as is for decades to come – environmentalists are going to hate it because deep down they're really a human hating death cult. Same way that back in the 70's they shifted to being against nuclear power, because it had the potential to allow civilization to thrive without causing pollution.
Discussion
Who gives a damn? Whether or not that theory is true doesn't change the observed reality that it's rare for oil and gas fields to refill once they've been depleted. And when they do refill, usually geologists have an obvious, boring, explanation like leakage from another oil or gas field that's connected to the one you extracted from.
I used to work in geophysics, at a company mainly funded by oil and gas interests. Angiogenic Deep Origin theory is regarded as an unscientific joke in the industry. It was an interesting hypothesis. But it failed to get good evidence for it.