"It doesn't become instantly special when Nintendo does it."

I would agree with you, if it weren't for the fact that Nintendo is, and has been for the past few gens, more ignored by third parties than even the PSVita seemed to be, especially in regards to JRPG's.

Vita is riding off of Sony's success with the PS4, and is basically the only portable option that the most popular company of the moment in gaming has for game makers to release their mobile titles on, which is why that's still seeing support.

The Wii U, however, was poorly supported in both effort and advertisement from the second year on, by all parties involved including Nintendo, and it being discontinued makes it obvious that it wouldn't be seeing a lot of support.

The Switch is in a different position from all of the above, however.
It's better advertised than all of the above, and is slowly seeing support from third parties that formerly completely ignored Nintendo after MAYBE one lazy job, no matter how popular or unpopular they were at the time.
It's not the amount that people in the know are pointing out; it's the people doing the games that matters, and that some of them are current gen, plus the fact that it's only 7 months into the system's life that these influential third parties have hopped on board by announcing multiple big-name titles.

Vita still receive games but 90% of it nobody wants.
And sales of the Vita prove it.

@ C

And what certain genres are you talking about?

Let's not forget that Switch is still lacking in various genres and will continue to do so for quite some time.

I didn't get my PS4 until this year because PS3 satiated my for a long time.