Nintendo has a history of taking existing genres they don't have much experience in, making it their own, and releasing really compelling games. Pikmin for RTSes, Splatoon for FPSes, etc. I don't think they're going to half-ass it.
Sounds quite successful to me, though of course it's still only a bit over a year old so who knows if it'll last.
It feels kind of like arguing about hacker and cracker.
Just checked and here in the UK Super Mario Run already has a banner feature and is top of the new games we love section despite not being available yet to play yet
Seems to me that this is a winning combination for a HUGE success.
Of course there will always by cynics calling that a failure, whatever the percentage of buyers.