I suspect much of it is a fear of change. People are looking for a remotely plausible reason to dismiss it, even if it doesn’t apply to them, because it means they won’t have to modify their behaviour. You can see this with plant based diets, public and active transport, and cooking and heating technologies such as induction cooktops and heatpumps.

The plus side is that the moment people actually make the change, they rarely go back. See also congestion pricing across the world, where the view of it is negative right up until it’s implemented and it almost immediately becomes popular.