Doesn't really surprise me, I've had a Steam deck since launch and the performance on Windows titles has always been impressive, even considering its relatively low-end hardware.
The only thing preventing me from dual-booting my desktop is lack of software RAID support in most distributions (by this I mean RAID configured in the BIOS but not using a dedicated hardware controller).
To be fair, that bios-managed RAID is still using a hardware controller. It's embedded in the motherboard.
Anyway, hardware RAID is discouraged in home/workstation environments as you don't have control over how the controller implements it. So if the board breaks, it's harder to retrieve your data.
Linux has support for real software RAID, for example using LVM or filesystems that have that feature. It's easier to setup than it may sound. Most distributions can enable that during installation of the OS.