Many more are assembled overseas and travel on ships in shipping containers year round, none of these have heat or a/c.
I agree, let them come to room temp before starting up.
I see many shipments through the year every year that contain television and computer monitors. If there was a problem with cold they would ship in refrigerated containers that keep them cool in the summer and warm in the winter. These containers are used for food, not electronics.
37 years of experience in railroads and intermodal shipping.