This is generally the right term. Carpenters also refers to the guys who put up metal studs, doors and things of that nature. But they might be referring to the people who put up their framing for the concrete structures and molds.

It's plausible quite a few smaller datacenters have modern engineered wood frames. Wood is pretty high-tech these days. Engineered wood is cheap, lightweight, preserves as well as reinforced concrete, and increasingly for new residential buildings under 5 stories. It would be competitive in a bidding process considering the investors clearly have an appetite for risk.

But even for a steel and concrete datacenter you would want a few carpenters for the interior where humans (at least occasionally) work, more to help with scaffolding and other temporary buildings (e..g housing) during construction, and building framing for drainage ditches and other landscaping. I imagine wood-and-nails carpenters are quite in-demand for most datacenter projects.