Regardless of node, size, clocks, whatever, I'm sure Nintendo will deliver something special and Nintendo like. So bring it on, whatever it is. As long as they have XOne GPU performance + Modern GPU features and modern CPU, I'm more than fine with it.
It was a joke...
First, if they do on 8nm first, then they will need to keep fabbing on Samsung Foundry. It will be Samsung co-owned IP. So a port to TSMC would need to be handled by different teams. Second, it would be wildly expensive (Current nodes are much more expensive and work intensive).
It also would pose the question: Why not fab your design on the most efficient available node at launch and make your design choices foward thinking enough for future Lite/OLED models, when your expenses are at the highest level and keep the same design and manufacturing until Switch 3? Manufacturing on one node at first and then a second node later is just more than doubling expenses, works, etc. And your target design, performance level, etc will still be compromised by the choices made to accomodate the first, less-efficient, design. We already saw the same happening with Switch.