Hello all,
I was wondering how wood affects the tone of the guitar if wood has no magnetic properties.
Of course it affects the tone of a guitar!!
However, it's not something you can or generally do change so how much it 'matters' to a guitarist is down to the individual but for a lot, the things they can change are far more important. It's far more important to the Luthier to be able to craft an instrument that at its 'core' is a musical instrument regardless of what the 'Musician' changes.
If you look at it from a Physics perspective, the neck and body are resonating and each piece of wood will 'resonate' at its own frequency which will impact on the underlying sound as it will amplify some frequencies and/or reduce others (out of phase). That's why if you buy a 'new' neck for a tele/strat in Rosewood for example, keeping 'everything' else (strings, bridge, tuners, nut, pups, electronics etc) you'll have a 'different' sounding instrument. Therefore the neck wood has impacted on the tone directly...
Like I said though, its not something that Musicians tend to do and the 'wood' is not something that you can often change so it's not really a 'consideration'. Pickups can make a big difference - like Mics can in front of a Speaker Cab so it becomes the easiest way to alter the way the guitar sounds and as they don't change 'woods', these become 'irrelevant' and even non-impactful. On top of that, they also have other ways to adjust the sound with Pedals, Amps, Cabs etc so the 'importance' of the 'wood' is negligible at best. But to the Luthier, it's a LOT more important and is a fundamental characteristic of the instrument and becomes 'important' to a musician when they want to craft a guitar for their needs but for the majority, it's not important because you can't change it and therefore ignore/dismiss it, focussing more on the bits they can change.
At the end of the day, its not worth arguing about. In most cases, you can't change the woods so does it matter? You have many ways to tweak the tone and change it and if the Luthier has done their Job, the Core is still going to be a great musical instrument and you'll dial in your settings to your taste anyway.