Schinzel's bound on the number of irreducible factors of Kf

Let $f$ be the polynomial considered in the source, let $Kf$ denote its associated polynomial vocabulary description, let $\Omega_1(f)$ be the number of irreducible factors of $Kf$ over $\mathbb{Q}$, counted with multiplicities, and let $\lVert f\rVert_2$ be the norm used in the source. Schinzel's conjecture. There exists a function $\psi$ such that

$$\Omega_1(f)\leq\psi(\lVert f\rVert_2).$$

The conjecture proposes a bound on the number of irreducible factors in terms of the size of $f$; the supplied context does not establish whether this bound has been proved or disproved.