So calling it The Switch's Killer App is really real?
I'd say one of the five killer apps that together form Switch's killer app
Voltron
On topic:
I'm fine with this workaround. It is better than a mandatory download and I don't think I'd play multiplayer on the Switch. It's already a big barrier to play a FPS on a console.
I really hope it gets pointer/gyro controls. Then I might consider playing multiplayer on switch.