True that the specific metric by definition excludes any use of fossil fuels that doesn't have an electricity step (ICE cars, gas for heating/cooking/water heating).

However it is a relevant question to consider, to the extent those non-electricity applications remain an obstacle for reducing greenhouse emissions. An ICE car being replaced by an EV means more grid load, a Gas furnace being replaced with a heat pump means more grid load.

As an example, in my region they are talking about increased load incurred in part from EVSE and heat pump conversions. To meet that demand, a part of the plan is actually building out even more natural gas electricity generation (alongside energy storage, solar, and wind).

While it's encouraging to see grids fairly claim reduction in carbon emissions (others have raised questions about whether this is a totally fair claim, but I have no idea), the total consumption picture is important to keep in mind.