You can attack emissions by limiting supply (stopping new oil drilling projects) or by limiting demand (flying less / driving less etc.). Both should work, since supply and demand are generally balanced. Reducing supply without reducing demand (what you seem to be proposing) will lead to massive price increases and energy poverty. This is confirmed by the energy crisis in Europe this winter, which was the result of a sudden decrease in supply. Reducing demand without reducing supply will lead to massive price decreases, which should increase demand from those that are less worried about climate change.
The transition to renewables can only be done by reducing both supply (less oil drilling) and demand (consumers and industry). I don't see how advocating for flying less, eating less meat, buying heat pumps etc. constitutes greenwashing, even if it oil companies co-opt it to deflect attention from themselves.