On a personal note, after classical music and flute training between ages 7 and 18, I started looking into hardware synths in the eighties, first getting an Alpha Juno 2, next a Korg DS-8, then an Alesis QuadraSynth and later an Alesis Fusion. Kept the two last ones, yet never played them. Dabbled with (electro) acoustic guitars. Got a 25 Anniversary Ovation from my wife as a wedding present and collected a few more, yet nothing fancy. Picked up tradition some thirty years later with a Roland FA and a few keyboard controllers, including Nektar's P6 and NI's Kontrol S49. Still boxed.
Why am I saying this? During that 30 years interlude, I witnessed the industry turn software and, most importantly, I saw that software became more and more affordable as well as professional.
This software evolution is quite incredible. Mere mortals can now achieve for a few hundred bucks what normally costs tens of thousands. If they're up to it.
And that's a huge if. I'm not just talking musical knowledge. I'm talking musical experience, insight and judgment. As we have and cherish all these plugins, the final courtroom is within our head.
So that's where John's grandson could make a difference. Through learning apps. Or software that allows us to first ascertain which musical direction we want to go, and next helps us with selecting the right plugins. Learning by doing.