Anyone who expected 4K games on a fucking $350-$400 handheld device with a slightly upclocked dock is a goddamn moron, full stop. Not even the absolute cream of the crop $1000 handheld stuff can do anything above 1080p well without aggressive upscaling.
To me the lack of 4k output would more surprising for media playback, like YouTube or Netflix or whatever, because that would be the extent of it. But IIRC the Switch barely had any streaming apps on it, just the bare minimum, so it wouldn't surprise me if this time around Nintendo does the same thing.
But lets see the dummies in this thread try to seriously act like anyone is buying a Nintendo device for graphics, and not the fact that they are essentially the last console maker left who is actually relying on the strength of their exclusives. I'll be buying a Switch 2 but I'm highly unlikely to get a PS6 or whatever the hell Xbox is doing, I'll wait for games to come on PC if I have to.