Warning 10.3.5.8. Let $\operatorname{\mathcal{QC}}$ denote the $\infty $-category of (small) $\infty $-categories. Then $\operatorname{\mathcal{QC}}$ contains quotient morphisms which are not universal quotient morphisms (see Variant 10.3.2.17). In particular, $\operatorname{\mathcal{QC}}$ is not regular.
$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$