you know you can just do this thing called walking away from them, which is to say completely throwing your support away and completely turning your back and ignoring everything they do from now on
NSO for the n64 got improved because people complained about it. Behold, now we got fog and all the other appropriate effects in Ocarina of Time and other games, because people were vocal about it.
Metroid 4 got its development restarted from the ground up, got the original studio back and took its time before we even saw footage about it because Nintendo knew, from experience, that they couldn't take their very vocal fans for granted.
I'm sure you can think of more examples like this.
Yes, hate bait can generate more visibility for Nintendo products. But that is just one of the many scenarios/factors surrounding complainants about Nintendo. They can also lead to positive outcomes. Even if Nintendo doesn't do something about it, this serves as a means for the community to communicate within themselves, so they can come with better solutions and inform others about those solutions. And even if we don't go that deep, simply communicating with other people what you feel about something matters for the sake of human interaction alone.
(which also means no piracy of future products since you're giving them the time and attention they want from while claiming you want nothing to do with them)
Piracy isn't an activism on its own. I said I hate Nintendo a few times and that piracy can feel good, but the end of the day I do it mostly for practical reasons. Speaking about practical reasons, I also pay Nintendo online so I can enjoy my games more. Because that's just how it is.
I'm not super analyzing every small action of mine just because of some grand scheme of things narrative. And that doesn't make complaining about the company or talking about piracy meaningless either. If Nintendo ninjas are measuring my posts with a engage-o-meter while stalking this random internet forum about nerd shit I couldn't care less.