The new C button is locked behind a paywall

The purpose behind the mysterious C button was finally revealed earlier this month during Nintendo’s Switch 2 Direct. It turns out the button stands for chat and it will be how you open up all the GameChat options on Switch 2. But GameChat, after an initial free trial, will only be available to paying Nintendo Online subscribers.
And if you don’t pay and press the button you are told to subscribe. Neat, a physical button hidden behind a paywall! I love our dystopian future. -ZZ