I'm thoroughly confused by this conversation. Rich said standby power (Power Off) was 0-2W.
https://www.eurogamer.net/articles/...-series-x-power-consumption-and-heat-analysis
"I also noted that in instant resume 'standby' mode, the Series X still draws around 29W - enough for me to turn my machine off completely."
This sounds like there may be options for standby mode. If you're concerned about power draw maybe you can opt out of instant resume?