This....
When you feed organically. Microbes break down and consume carbon-containing macromolecules and excrete inorganic ions such as phosphates ammonia and potassium, which the plants then takes up. In Hydro these inorganic ions are supplied to the plant immediately within the nutrient solution, which the plant can immediately feed on. I like looking at it as shelled lobster vs unshelled lobster... one requires more work, same shit on the inside.
However, it is a bit more complicated as its not just inorganic substances that the plant is provided with in a living substrate. microbes are also a source of secondary metabolites, things like hormones, amino acids, and other biostimulants. In my opinion, I think its safe to say that no nutrient bottle (organic or inorganic) can compare to the sheer diversity or complexity of biostimulants that microbes will prepare and deliver to your plant.
NOTICE i said "LIVING SUBSTRATE" not soil/hydro i really think thats important because hydro can be made to "Live" as well. especailly when you use organic substrates such as coco coir where microbes can flourish but the low CEC still makes it suitable for hydroponic growth techniques.
Anyone ever head of Bioponics? Hydroponics can be completely organic too, Biotabs in coco coir autopots are a good example in my opinion, same with aquaponics (the complicated fish shit stuff).
To conclude i wouldnt say that hydroponic products are lower quality in fact i think that because you can potentially introduce organic or living principles into a hydroponic setup, and precisely control your plants nutrient intake id say ultimately hydro has the highest potential to form higher quality crops. of course i could be wrong but this is how i see it