Electronics are reliable when operated within their proper temperature range and keeping them in this safe operational environment extends their life.
Even your laptop has a small fan in it but much of the laptop's thermal design is handled by making its mechanical design (such as the frame and the case) a heat sink for the electrical components.
Electronics components in these massive data servers will throw out a lot of heat and if left unchecked they will fall out of their safe operating temperature and fail. Picture racks and racks of printed circuit boards, each with millions of circuits running high speed calculations. Blowers move cool air either over or through the boards. So A/C compressors are needed. Some really large systems have liquid cooling running through the equipment rack "cold walls" that are analogous to a car radiator system. A liquid cooling system also needs a heat exchanger.
So you need power for the computers/servers, and for cooling systems, and for the buildings environmental control. They set it up in a closed loop system to maintain the optimal operating temperature - meaning they need thermostats, flow sensing, and real-time continuous monitoring.
Given this, the buildings should be insulated and putting them in cooler climates makes much more sense to reduce the requirements for cooling. But, who knows what they actually do?
Seems like a lot of energy and environmental impact for something with a debatable need.