It kind of is, though. The cost of the system on its own is not the cost of the platform. Buyung the same games on a switch+paying for online mp is substantially more expensive than having a steam deck and using steam.

Used isn’t exactly the same as refurbished, but even a new unit is still cheaper than a Switch 2, more versatile, has more games, and isn’t locked into any ecosystem. You get a lot more value with a Steam Deck, and like you said, for $50 less.