Could Quark model turn out to be false?

Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nuclei.

Due to a phenomenon known as color confinement, quarks are never directly observed or found in isolation; they can be found only within baryons or mesons.

This sentence makes me very nervous: Due to a phenomenon known as color confinement

This sentence is Like I want to prove something spurious to save the subject (quark).