So it runs a Linux 4.9 kernel from 2018 and costs as much as any of the tiny AllWinner boards, which run 5 kernels.
Is there anything meaningful I should care about here?
Compared to the smallest Allwinner SoM (DDR2 integ.) it's quarter the footprint & quarter the power consumption with double the memory and dual core.
It seems like you're talking about SBC, not SoM...