My understanding of it so far is that it is at most, 50 or 100 houses as a test... It's a startup that wants to make it wide scale but hasn't got there yet.
Calling them a "hyperscaler" is a stretch. By all accounts it's some renewables startup that's trying to pivot into AI because obviously AI = $$$, and calling themselves a "hyperscaler" in the process. Calling them a "hyperscaler" makes as much sense as some guy who runs a homelab in his basement as a "datacenter".
Source? There's definitely shady people paying people to host proxies, but hyperscalers doing it would be surprising.