Having one big thread sounds like a good idea on paper, but it only works if the user is actively looking for content from all the members - which might not be the case.
Say, for example, we had a single generic VAllure content thread and I
only liked Immy Bisou. I only wanted to see her content. Every time I get a notification that the thread is updated I have a 1/6 chance of it being for the one I like, which is annoying, and as the thread grows larger and larger it will become harder and harder for me to just find Immy's content. It puts the onus on the thread OP to create a lookup table to sort the girl's content (which he wont be able to do unless he's Simp Council anyway)
Inversely, if you separate them into their own individual threads you dont run the risk of any content getting mixed up and the users have their own agency to watch/follow the threads they want
Moreover, if we use the site's tag system, all the girls are still connected to one another anyway with a single click -
simpcity.su