This is definitely a huge pain in the ass with my Samsung KS8000 acting as my monitor / TV. My current work around is removing the switch from the dock when I'm done, as I set it up within arms reach of my seating. I place it onto a nice stand I bought that is all purpose. I'm probably 70/30 handheld to TV at the moment.
I was looking at the dock, and was considering some possibilities. The system plugs into a male USB-C at the bottom of the dock after it rests in place. Would it be possible to simply plug a female to male USB-C cable into the dock, which will plug into the switch? Couldn't that just act as an extension cable for the dock? It would be fantastic if I could just undo that cable before doing something else on the TV with a quick tug, rather than attaching the joy-cons, pulling it out, and moving it to the stand. When I want to play on the TV, just plug the wire into the bottom of the Switch, and play as usual. The dock seems like just a piece of plastic with ports on it, I don't think it actually has any other functions.