Ok, just some food for thought....
Why does the wood need to breath?
Why does poly hurt tone. What property of a poly finish is different from other finishes that makes that so? Under what conditions does poly hurt tone?
Could poly improve tone? If so, under what conditions?
We cant take the same exact body and pickups and neck and refinish it - so we have to draw on generality, based on large samples of poly vs whatever. What other specific traits did those large samples have? Was there anything specific to those poly finished guitars that varied, or was different from the other guitars?
Let me give you a "for instance"....
A person might like the sound (tone) of a twin pickup ES-137, and not like the tone of a Telecaster. So one might conclude the following:
Solid bodies suck for tone.
Poly finish sucks for tone
Single coils suck for tone
Maple fingerboards suck for tone
Maple necks suck for tone
Bolt on necks suck for tone
Angled pegheads improve tone
....and the list goes on and on.
But, we know there are GREAT and FANTASTIC and KILLER sounding guitars with solid bodies, poly finishes, single coil pickups, bolt on maple necks with maple fretboards, and straight headstocks. And there are terrible guitars with hollow bodies, nitro finishes, HB's, and glued in mahogany /rosewood angle peghead necks.
So that leaves a huge giant HMMMMMMMmmmmmm in ones mind.
To all that, I've concluded its hogwash.
Real tone comes from the knob that is labeled "Tone" (or is blank but has the same function).
With the selection of the right knob, all will be right with the world. And knobs are easier and cheaper to change than pickups, or necks or finishes. So if the strat knob doesn't cut it, use a bell knob, or speed knob, or wooden speed knob....
But, when you change knobs, please be sure to use knobs made of old wood, or vintage plastic, or better yet "phenolic" plastic. Make sure your brass knob is made of bell brass, not common brass. And the set screw... it must NEVER be a socket head type, or a philips head type, but ALWAYS a single, shallow slot. Yah they tend to let the screwdriver slip, but that is where the real tone is made.
Then go out and learn to play your guitar.