Of course; no one argued otherwise, so I think you're fighting a strawman here. You said there was "no way" mobile games could convince the casual gamer to check out a more premium experience. Perhaps you have since changed your stance.
I only think kids who don't know if they like consoles yet will be motivated to buy one from a mobile game. Anyone who's in their 20s and hasn't touched/enjoyed a console game probably never will. And no mobile game will ever convince them otherwise.
So, not only did they report an increase in sales of Pokémon software, but also 3DS hardware during this time period.
I think nearly all of those increased sales were done by core gamers who had once owned Pokémon as a kid and were reinvigorated by nostalgia to buy a new Pokémon game. Especially Omega Ruby and Alpha Sapphire which they may have also played as kids. Another portion is probably little kids who don't know if they are gamers yet.
In short, mobile games will remind people who are still gamers but have left Nintendo to get back and play them. They might also convince young kids to get them too. But everyone else, someone who knows they only like phone games (aka casual gamers), are never going to play a console.
Let me tell you from experience. One of my friends went out and bought a 3DS and Pokémon after playing Pokémon Go. But he was no casual. He had moved on from Nintendo and was now playing XBox One. But Pokémon Go reinvigorated his nostalgia of when he used to play Pokémon on his Gameboy Advance.
Meanwhile, my girlfriend also downloaded Pokémon Go for fun. She had never played a real Pokémon game before. And while she had fun playing Pokémon Go, she most certainly was not convinced to go out and buy and expensive 3DS system. Having never played a real Pokémon game, she had no interest in getting one now.