It's more of a "large vehicles" thing. Battery size scales with vehicle size, so large SUVs and trucks need very large batteries. Larger than we're used to seeing on the typical Tesla or similar.
For example the BYD Dolphin is 1285-1450 kg depending on options, where the comparable Honda Fit is 1070-1280 kg.
Likewise the Tesla Model 3 is 1611-1847 kg, compared to a Toyota Camry weighing 1470-1660 kg.
The weight penalty for EVs could well go down over time as energy density of batteries increases and weight of electric drivetrains decreases. There is also more of an incentive to keep weight down on an EV as it means you can use a smaller (cheaper) battery for the same range.
Average adult American of 80kgs.