yes, especially because there is an industrial variant that works down to -40 C. We use them in our detectors in Greenland. rpi's sometimes work at low temperatures, but are not spec'd for it (plus they use tons of power compared to the BBB).

Yes, for the application I used them in, we were concerned about both the upper and lower limits (heat from operation + cold when turned off in the winter). Outdoor installation, with hundreds of units per site.