Agree with most of what you said, however, my organic grown herb does not taste or have any taste that is related to the medium in the final product. That's why we don't flush in true organic soil, because there's nothing bad we have to flush out. Them micro beasties do all the work
Now my two cents on hydro or organic soil.
As we all kno, It all comes down to the genetics, proper organic medium, proper enviroment and last but not least drying/curing process.
So subjectively I say , hydro does not bring out more of the plant taste, it does the opposite, it brings out the medium's synthetic upbringing taste. Burns your throat in the inhale, exhale has that chemical after taste. (Flush all you want, that shit ain't fooling me or anyone that knows there shit)
The only pro I see with hydro is it's slightly faster, and sure it's fun lol.
However I would counter that because I believe it's not natural for a plant to grow too fast, this causes the plant to have a weak immune system, which makes it more vulnerable to pest and disease, thus relying on more chemicals to stop these sort of medium related attacks.
And no synthetic does not prudce a higher yield, this is also false.
In organics, the genetics grow to their true natural form, building a strong healthy immune system from which it gets from the organic medium.
My organic grown herb is by far superior in every way compared to any hydro set up. Sure this can be subjective, but eh, been there, done that.