It’s even simpler than that, it’s ALL in the fingers. Cue cancellation of troll post§!Common oversimplification. The string vibration that creates current in the pickup is influenced by how vibrations in the guitar neck and body travel back through the strings. This is very obviously evident in qualities such as sustain (or lack of it) and overall tonality of the guitar (bright, warm, whatever) as the neck and body both transmit some vibrations and absorb others. The nonsensical view that it's just strings and pickups with no other factors at work has been amply disproven. I would also add that many pickups are a bit, or a lot, microphonic. Tap the body of your guitar and tell me that no sound comes through your amp. Sure, all these factors have different degrees of effect, and no competent builder would claim that all of them are always a big deal, but to say they don't exist, or are always trivial, or can't be heard is simply incorrect. The Tele obsessives will tell you that they hear differences in the different metals used for saddles, for crying out loud. If a person can't hear some of these distinctions, including how the acoustic qualities of an unamplified guitar affect the amplified sound, it's more likely the listener, not the functioning of electric guitars, that's creating that outcome.