I don't see how that's even remotely comparable. It's not like you can replace the battery in your phone with a larger one. You will be able to buy a new battery for your car, that's already guaranteed in the EU - but it will be the same capacity as what you got.
I don't know why is this even an argument really, like.....in a petrol car, do you expect to be able to fit it with a bigger fuel tank after 10 years? or a more powerful engine? Until very recently even software updates to the infotainment weren't really a thing, if you wanted a newer interface you had to change the entire car(I'm not saying this was a good thing, just that generally the expectation is that the product will work the way it was when you bought it).
> It's not like you can replace the battery in your phone with a larger one.
That was totally a thing for phones in the past. Depending on the model you could get a larger pack that had a bulge on the back of the device to have extra battery time. There was a similar thing with a number of laptops.
I do agree its kind of a questionable thing on something like a car. I imagine packaging concerns would really get in the way of adding a bit extra.