That is a UK-centric view I think. Getting an extra jumper may be a possible solution most of the time in the UK. It is not the case in the winter in my climate. At the other extreme someone in a very hot climate may have a justifiable need to spend some of their available battery power on air conditioning. Cars are typically made for global markets, so the same car has to be able to cope anywhere from Arizona to the Arctic and currently (excuse the pun) that means range takes a big hit in the more extreme conditions.You are missing the crux, by burning dino just because you are too lazy to get a jumper, you are in all likelyhood actually killing your grandkids.