Looks like their post got us both thinking. I can totally see it from Kakarott's side though, if you've had one since release and played everything you want to play on it then it certainly makes sense to want a new improved experience. Look how far mobile processors have come along in recent years and think what Nintendo could do on a new chip...Why do you hope that?
The Switch is still selling well and still has a number of games coming out this year. No need for them to hurry out the next console.