Switch is more like smartphone hardware, though with differentiation and innovation in the form factor, hybrid docking design, and joy-con controllers; and it's clearly still a game console, running a custom OS and software and supporting game cartridges.

The influence goes both ways however - both the Steam Deck and Steam Machine are attempts to build a PC that resembles a game console (the former being Switch-like and the latter as something of a "GabeCube.") Steam Deck's Game Mode UI and Steam's Big Picture mode try to provide a console-like experience as well.