If you have a keyboard or mouse laying around that you think would be useful to set up with your Switch, it's 100% a thing you can do.

Learn how to use your Joy-Con as a mouse and connect a USB keyboard and mouse on the Nintendo Switch 2 for dynamic control options.

I’m just a little confused about the use case. I could move my keyboard and mouse out of the way, connect the dock to my computer monitor, and play the Switch 2 that way, but I have a PC for that.

The KeyMander 2 lets you use a keyboard and mouse with a PS4, Xbox One and now a Nintendo Switch.

Nintendo has revealed that the Switch 2 will support USB keyboards on their support site, a potential complement to mouse mode.