It is something that will need time to grow. Models have the potential to generate massive followers and it is those followers that generate the value and ultimately money. However, there is a constant threat for models on those other social media platforms. The other platforms can block users, they can disable account access, they can delete accounts, and they can hold an account hostage if they decide that the free account is operating as a business in which business accounts require regular payments to operate on those platforms. Models always skate that thin ice of being considered a business. In fact, it is their social media accounts that get them noticed and paying gigs. It is devastating whey they lose their access or deleted for any other reason. Right now the focus should be to have an account that the model's own for life without the threat of losing the account or users blocked.
There is another major advantage that will come with time. Eventually, when there are hundreds of front-ends that use the STEEM blockchain, the model's blogs will be mirrored on each of those front-ends. That is huge. If you don't know what "mirrored" means, here is an explanation. Imagine if a model posted on Facebook. That will only give the model a limited chance to get a google searchable link. Then the model posts on Instagram. Again that only gives the model another limited chance to get a google searchable link. The model continues to do that on multiple platforms with little success with their self promotion. If STEEM had hundreds of front-ends like different versions of facebook, Instagram, twitter, youtube, and totally unique front-ends, then all the model needs to do is post once on their favorite front-end. Then the model's post is now viewable on hundreds of STEEM based front-ends. Google search bots will pick up on the model's blog because there are hundreds of ways to find it even though the model posted once. That is a huge advantage.