I’m sure with that statement, a chill just ran down your spine, but unfortunately, that’s the truth.
Despite switching away from the Wii and 3DS’ much-despised Friend Code system with the Wii U, reportedly it has returned (rather inexplicably) for the Nintendo Switch as the sole means of adding a friend on the console. It is likely however that the mobile app meant for managing online and community features will still allow you to add friends via Nintendo Network ID when it launches, but we have yet to have official confirmation.
It is also possibly that tomorrow’s day one update will resolve this concern, but again, nothing is set in stone at all. We may be stuck with friend codes for a while.
The Nintendo Switch launches tomorrow, on March 3rd, 2017.