The theoretical Three Mile Island datacentre is probably the end-point of all of this. I think that what they build there (should it actually happen) has to be AGI. Like, unambiguously AGI. Where even the most hardline AI skeptics will react with "Holy shit they actually did it."
Anything less and it'll be nearly impossible to justify building 5 nuclear reactors to just power one of these datacentres.
So even if it is happening, it's still not happening.
I don't think they're planning to build the 5GW datacentres on TMI, though.