Why irons though?

i remember a classic demo at one conference where they used a PSU. It had some advantages: 99% certain it will be used near a computer. USB and Ethernet ports for "power surge protection" that can add attack vectors.

the only reason i can think of for irons is either lack of other opportunities, or trying to be as inconspicuous as possible (tech savy people are more prone to opening a PSU than an iron)