I don't see the 120B claim on the page itself. Unless the page has been edited, I think it's something the submitter added.
I agree, though. The only way you're running 120B models on that device is either extreme quantization or by offloading layers to the CPU. Neither will be a good experience.
These aren't a good value buy unless you compare them to fully supported offerings from the big players.
It's going to be hard to target a market where most people know they can put together the exact same system for thousands of dollars less and have it assembled in an afternoon. RTX 6000 96GB cards are in stock at Newegg for $9000 right now which leaves almost $30,000 for the rest of the system. Even with today's RAM prices it's not hard to do better than that CPU and 256GB of RAM when you have a $30,000 budget.