True, but oil pan heaters are a thing. Is there an electric vehicle equivalent?

It's not needed for EVs, they just work, though with faster drain and slower charging speeds (though battery heaters/conditioners help mitigate this). Batteries wear out more quickly from long-term cold exposure, which is why I said "year round subzero temps". For typical American winters, even up here in Minnesota, it's not a significant issue.

Now I get it, you're talking about subzero fahrenheit temperatures. So sub -17,7 temperature in normal people's units ;)

Because subzero celsius temperatures are not an issue. Scandinavia and Finland have a lot of EVs, and also big distances to drive. Doesn't seem to be a big issue.