It is what it is. People are just gonna have to get used to Gou getting more powerful Pokémon. His dream is to catch them all after all.Eh, I see a lot of people say Go shouldn't get strong pokemon but it doesn't bother me since he doesn't use them in traditional trainer battles much. And Golurk is fine cause it seems to be some sort of protector for Go's mons at the lab and likely won't get to leave much.
Like you said I doubt Golurk is gonna be used much after this.