Adding a 240 volt circuit to most houses is trivial and cheap. If you can afford 4K for a mining device, you can afford another 50-200 dollars for a new circuit or, worst case, a new panel with a new circuit. I find this argument disengenuous. Calling out a company for missing their target is fine and dandy. From what I've seen, Spondoolies has acknowledged that they made some errors and are working to rectify it. But bitching about a circuit or two is just plain trolling. This is high school level stuff.
I agree, even if people don't know how to do it themselves, Electricians aren't that expensive, and surely they have a buddy that would do it for a few beers. Or maybe not. Still, couple hundred bucks isn't that much.
I don't think any situation would ever exist when a new panel is necessary.