Why I'm Keeping my Switch, and Digital Refunds!

[Peh]

This is well known that there is no online coop. If you didn't know it, you should do some research before buying a game. That's also meant as a general advice. Nintendo's policy is also well known and again, do your research. If the price is too high for you, don't buy it and wait for a discount. Since you've bought the game at that price, you've agreed on it.

This is entirely on you.