For me, a little harsh.
A group of gigantic space gods that see three genetically-modified variants of a common anthropoid ancestor as nothing more than test organisms on an oversized, rocky, spheroidal Petri dish that they could sterilise at will.
The extremely dark and emotional issue 8 featuring the Deviant Holocaust, referred to as Purity Time, as they exterminate the unluckiest, most deformed, 'most monstrous' of their society, with obvious real world parallels, and preceded by a scene of extreme abuse of one of these Rejects, witnessed by Thena. One of the most powerful Kirby stories of all.
Hardly what I'd consider vapid.