That new G4 H1N1 flu hits those who had Covid 19 really hard.
I'm not as worried about the new influenza as I am about Covid-19. When an influenza virus adapts to a human host, it usually drops considerably in virulence. In addition, we have technology to rapidly develop new influenza vaccines. We don't have any such technology for coronaviruses.
It does make sense that someone whose body is still trying to repair the damage from Covid-19 would be hit harder by an influenza than someone who is healthy. Your body only has so much energy to fight disease.