I guess it’s all a matter of perspective. We both have different views of a printer. For me it’s a tool in my shed. And in my shed, it’s actually the most quiet tool of the bunch
All I can say is that I do not find the X1C to be noisy at all at idle (as long as everything is cold). If yours is, there might be a fan broken.
Does the integrated power supply have a separate fan? I couldn’t see this when replacing the motherboard fan.