If it's 40 below out, the vast majority of outside workers should be not working. The vast majority of work that could use a truck is work that isn't going to frequently (or ever) encounter that kind of temperature range. A 600V DCFC is going to charge either of those trucks quickly in the majority of scenarios.
Most truck owners aren't people doing "truck work" anyway, though. They own a truck as a public facing part of their personality. It's virtue signalling.