Of course it was, they are talking about the 2012~2015 (not sure about the exact date) steam machine that was released and failed. It took a long time for enough pieces to fall into place that would lead to the success of the steam deck and now the, too soon to call a success, launch of the new steam machine (2026).

The original Steam Machines were a line of pre-made PCs with SteamOS from various vendors. Valve made a reference machine, but it was never widely available. The device released today is their first product that's actually called "Steam Machine".