RDNA2 (including "AMD Radeon Graphics") rises from 2.68% to 2.76%.
Ampere rises from 14.93% to 16.03%.
DX12 GPUs rise from 91.82% to 92.66%
AMD CPUs rise from 31.57% to 32.79%.
Intel CPUs fall from 68.42% to 67.19%.
"Steam users with VR headsets" share rises from 1.89% to 3.24%... WTF?
Perhaps they changed their survey method. For example they could count accounts/systems which played VR games recently, even when the VR headset ain't connected at the time of the survey.