I mean the piracy community is a hydra, if you cut off one head there's another waiting, but they do make it annoying. Look at how many websites are hesitant about posting Switch content. It might be a "dragging heels in the sand situation" but it does provide a bit of resistance towards piracy.
All that said I don't think Nintendo realizes how many people are in the piracy headspace of "they wouldn't have purchased it even if piracy wasn't an option". I imagine a lot of people who pirate Switch games don't even own a Switch. They just want to play one or two games don't view the cost of the console and game as worth it.