Yes to the above. I'd also add that fine motor skills are proven to be trained through sleeping. Music has a ton of that, so practicing every day serves a purpose that cannot be replaced by intense sessions.
It is however very possible (and likely) that the author had already trained and somewhat saturated those parts, perhaps even without thinking about it because it was their natural state. In those cases you can become a sponge when a new modality opens up to you.
Rich kids who get personal tutors tend to not dominate their fields. There's an advantage, but it has to be coupled with alone-time practicing. People who alone-time practice out of genuine curiosity tend to underestimate the magnitude of practice they get because it can feel effortless.
It is however very possible (and likely) that the author had already trained and somewhat saturated those parts, perhaps even without thinking about it because it was their natural state. In those cases you can become a sponge when a new modality opens up to you.
Rich kids who get personal tutors tend to not dominate their fields. There's an advantage, but it has to be coupled with alone-time practicing. People who alone-time practice out of genuine curiosity tend to underestimate the magnitude of practice they get because it can feel effortless.