The response cites a table showing that desktop PCs sold after 2021-07-01 must consume no more than 75 kilowatt hours per year (base rate, with adders allowed for some features). 75 kWh/year is only 8.6 watts of continuous power draw. Even a basic budget desktop will drastically exceed 8.6 W if it's on continuously with significant load, like running folding@home. Since practically every desktop computer can draw more than 8.6 watts and sales of only a few computer models are restricted, I conclude that the restrictions are not about power consumption in the fully active state.

The exact math was off, but high end gaming PCs are still not being banned.

The important dispute isn't about the calculations, but whether the limits only apply to sleep mode (as claimed by the first comment) or also to yearly maximum power consumption (and thus to power consumption during active use).

If they applied to active use it would effectively outlaw computers entirely. That interpretation doesn't make sense.

There's some uncertainty with various forms of idle and sleep but that's a much smaller worry.