I grew up in the 90s in India and was a almost in high school when Pokemon come about there in the early 2000s. I thought I was too old to get into it. I did not know any pokemons besides Pikachu until a month ago.
When I started Pokemon Go, I never used the tracker before it broke. I reached level 13 without ever using the tracker. Then pokevision came out, which spoiled me, made me lazy and not go out the house unless a rare Pokemon spawned. With pokevision, I was only catching selective pokemons and was satisfied with a 2 km walk everyday. Before and after pokevision, I’m doing anywhere between 6 to 8 kms everyday. Even though I am not catching new pokemons everyday, I’m gaining more XP and stardust, hence I’m also levelling up faster.
So Yang’s assertion, that casual gamers and new fans are walking away from the game is wrong. The in-game tracker never mattered to me. In fact, it makes me use and trust my natural instincts more.