Importantly, introduction of rotational inertia induces large decorrelation time of velocity direction, reducing effective rotational diffusion. At the same time activity promotes local stretching of the chains -the effect that is obviously absent in the active gas. Importantly, observed phenomena are steady within nonequilibrium dynamics and are observed within a wide range of parameters. We suggest that collapse of the active polymer chain is a universal effect that can be observed in different activity models at some large polymerization degree.