We're already starting to get deployments of 47kW per rack.
Please factor this into your "120MW data centre".
Given that the comparison is with a Small Modular Reactor, this isn't really relevant. If we end up with GW data centers then the comparison result may change, since it will be comparing a full-sized reactor against much larger renewable plants. I doubt the results will be much different, but they might be.
Of course intermittent unreliable power is cheaper than reliable power, if it actually is, which it probably isn't if it includes the need for reliable power.
From the summary:
it would cost 43 percent less to power a 120 MW data facility with renewables and a small amount of gas-generated energy
Renewables plus a gas plant are just as reliable as a nuclear plant. This analysis appears to have taken reliability as a pre-requisite, then with that addressed they compared costs.
They are driven, mindlessly, to pile up riches far beyond any conceivable need.
They really aren't. Their drive is for status and a feeling of accomplishment, not money. Money is just the way they keep score. It's relevant and important to understand that the numbers aren't even real money. It's not cash in the bank, it's the value of their share of the company they oversee. The goal is to increase the value of those operations... and it should be noted that because those companies provide value to consumers and jobs for employees, it's really easy for CEOs to convince themselves that making the number go up increases their own status score and makes humanity better off, which isn't entirely true but also isn't entirely false.
Reducing this complex set of motivations to money misses the mark, badly.
"There is hopeful symbolism in the fact that flags do not wave in a vacuum." --Arthur C. Clarke