It's not in Nintendo's interest to release Switch 2 any time soon anyway, so there's no need to rush.
It all depends on how seemless the delivery is. Due to DLSS, they could technically release the games on both consoles without a problem.
So, it is completely in their interest to upgrade this way, since everything is pointing to this. We went over it in depth in my past thread.
Also, the spiritual successor to Suikoden shows why this move is much more important than you might think.