The entire topic is unnecessary. If my domain name is fuckyougoogle.com and if anyone search with fuckyougoogle then obviously my domain will be shown first.
The domain name has no decisive importance for positioning on the search engine. Certainly not like the <H> tags and of course the content.
As for adding "talk" to the domain, it's a bit of a strange phenomenon, since I've seen it most often in crypto-related forums. I guess it was inspired by the success of the bitcointalk forum, so many tried to do something similar. As far as I know, only altcoinstalks and no other CT (I think that's the name of the Yobit forum.) are active.