Wheelbuilding / Wheel Building / Wheel build help

So if 'flex' means 'bend under sideways loads' then a high tension spoke will flex less than a low tension spoke, and a thick spoke will flex less than a thin spoke of equal initial tension.

But as their leverage points are different from either side of an offset wheel, would there not be more load on the higher tension drive-side under strain that's not the tension from the wheels geometry?
As there is less need for tension on the other side, would it not equal out the amount of actual 'bend under sideways loads' flex (movement under force) from one side to the other, to create closer to equal flex (or movement?)?

If initial tension is increased, spoke thickness becomes relatively less important.

Ah, now that's interesting.
I used hex head nipples on my last build with Archetype rims and was comfortably (but very carefully!) hitting 140kgf drive-side tension and went to a lot of effort to have as consistent tension as possible per side, but was expecting the wheels to be more flexible as I was using CX-Rays, and was surprised at how stiff they felt.
Was it because of the higher tension, or was it all in my head as I was excited over new wheels?!