There's also Bully.

EDIT: And Table Tennis!

Their support has been paltry at best, the point still stands. 

There's also Bully, and Table Tennis.

Honestly, that's more than some other devs have ever done.

But that's only four titles spread across multiple Nintendo platforms spanning at least the past 10 years lol... And if other devs have done less then I wouldn't expect it to change now unless Nintendo really shakes things up with their new console hybrid. Which, either way, I'll be getting the NX, don't really care if it has third party support or not 

Well, just like the average consumer, you don't really know what the NX is or what crazy hardware thing will Nintendo bring up. You might or might not end up buying it, unless you already have set in mind purchasing whatever hardware Nintendo might put out regardless of how it is or what it does/doesn't. What's undeniable is that, having recognizable third parties on board beforehand is a great signal to send potential customers, no matter how little you personally care about it.

There should be no surprises there, two words: "Nintendo" & "Gimmick".

Although if that portable piece of hardware was to be made by Apple, and that docking station was to be a, let's say, Apple TV, I'd change my statement.

wait... what? is there any confirmation about this?

1. Rumor 2. Tested not running (whatever tested meant)
Atleast that is what I recall. 

Unseen64 reported it a while ago. He is kind of a authority when it comes to cancelled projects and little things behind the scenes that never see the light of day.

Ppl buy Nintendo for Nintendo games. Not for third party support.