Highly likely this could replace my desktop, as I don't need something much more powerful, just with more modern hardware. I don't do much AAA gaming and nearly game in my Steam library would run on this just fine. My regular daily computing needs can reasonably be satisfied with the compute power of a Raspberry Pi. I can swap flatpak based immutable SteamOS with plain Arch without losing the advantages (i.e. custom hardware settings integration) that one might sacrifice doing so on the Steam Deck.
This is going to be a no-brainer for my next upgrade.