As I understand it, the problem is cooling. There isn't any medium to take away the heat, so the only option is to slowly radiate it away.
Anyone who has googled just once to ask if datacenters in space make any sense, has found out they don't because they can't get rid of heat.
That leaves only two kinds of people left who are still talking excitedly about datacenters in space: The uninformed and the grifters.
Which is apparently manageable. Scott Manley isn’t an industry veteran, but he does know a lot about space engineering and science. Here’s his breakdown of the feasibility, and heat management is not really a major issue:
https://youtu.be/DCto6UkBJoI