Yeah, this is something many climate advocates say - that it is better to keep the car you have - but I don’t think this is backed up by data at all. It’s very clear that that EVs are able to save more carbon emissions than in a fairly short period than you would save by not continuing to drive an ICE vehicle, with manufacturing included.
If we were going to have a simple rule, replacing all ICE vehicles today with EVs will be far better for the climate than keeping them.
There is the doomerism timeline. “Well, it’s too late now, no reason to change anything now!”.
Doomerism is just an evolution of binary thinking.