I was digging around on the steam hardware survey and it does list steam deck separately if you tell the hardware survey to only show you Linux, and it is ~5.5x more popular that arch, and also reports that arch and Ubuntu are similar, leading me to believe the steam deck is fully excluded from the default combined view.
If you take that x5.5 and use it to extrapolate, steam decks should have about 0.82% market share
I was digging around on the steam hardware survey and it does list steam deck separately if you tell the hardware survey to only show you Linux, and it is ~5.5x more popular that arch, and also reports that arch and Ubuntu are similar, leading me to believe the steam deck is fully excluded from the default combined view.
If you take that x5.5 and use it to extrapolate, steam decks should have about 0.82% market share