See, that is why the switch to heat pumps for heating makes sonmuch sense: you can store oversupply of renewable electricy in the form of hot water, cutting down significantly on the CO2 emissions currently produced by heating with oil and gas.
Obviously these aren't independent domains. Make electricity cheap and it takes over the other energy domains. Heat pumps for heating, BEV/hydrogen for transportation.
Primary energy usage in Germany is split 25% is electricity, 25% is traffic and 50% is heating and cooling.
As proven by the article the whole discussion is a huge red herring.
Amdahl's law applies [0], if I reduce CO2 from electricity production by 50%, my overall reduction is only 12.5%
[0] https://en.wikipedia.org/wiki/Amdahl%27s_law