You did not explain how these undetectable/inobservable/nonconfirmable quarks were somehow detected/observed/confirmed. You keep chanting that they were detected/observed/confirmed as your basis for claiming that quarks have been discovered, not merely theorized.
The researchers whose continued funding was results-driven needed to show some results so they "declared" the discovery of quarks and everybody was happy. It was something that couldn't be proven false. Nonetheless, no "quarks" have been discovered; quarks are merely theorized particles that cannot be detected according to the exact same theory that theorizes their existence. To declare detection is to destroy the very theory of which they theoretically exist. This is how religions work, by the way.