This is not particularly necessary, because we can save at least our genetic information for possibility of being recreated in the future. So we can also hope for friendly alien civ to defeat superintelligence even if humanity is extinct. If a hostile superintelligence takes over the universe, it’s not likely that humans will be recreated ever.
I am pretty sure that the OP’s main source of hope is that the alien civ will intervene before a superintelligence is created by humans.
This is not particularly necessary, because we can save at least our genetic information for possibility of being recreated in the future. So we can also hope for friendly alien civ to defeat superintelligence even if humanity is extinct. If a hostile superintelligence takes over the universe, it’s not likely that humans will be recreated ever.