Unless of course you mean, multiple models continuously using one account.I think that is what he means. They do that so the account can run 24/7 like a tv channel. It is a strategy. I think it is a silly and weak strategy, but it is a strategy. Each girl is like a tv show. In case a girl goes viral, the traffic goes to the channel, not the girl because if people google the girl's name, it will lead to the "tv channel". The channel may or may not be streaming that girl. But it will be streaming a girl. So they never waste any traffic landing on the "tv channel".