I suspect the fact it seems so soon means this “Switch 2” will simply be a (big) hardware upgraded Switch 1. With mostly the same design, same compatibility, but now some games would be “Switch 2 Only”.
It would break the “you have to buy everything again” that could push some customers in the hands of Valve and it's Steam Deck. It would actually be a smart move to be the “same as Steam” (store+dedicated hardware) but with Nintendo IP.
Future will tell, but I think it's the less risky move that could give big benefits on the long run.