This is absolutely not true. Oil and gas has lifted billions out of poverty and increased everyone’s quality of life hugely. Especially in “third world” countries where there are no affordable alternative energy sources.
Fossil fuels have certainly helped improve the lives of billions. At the same time, the negative impact can't be overstated, and only gets worse with time (the more the climate changes, the higher the future cost).
Additionally, oil extracted in California for domestic consumption doesn't affect third world countries, so it's irrelevant what positive impact it might make halfway across the world.
Oil is a global market, so oil extracted in California impacts global supply and demand.
You can't know that yet because it hasn't happened and climate change predictions tell us the opposite.
Or in more familiar terms: we've been eating our young.