It helps to have an ANN thread but unfortunately there is no active Roobet representative on this forum anymore so I don't think they really follow BCT, which is a pity.
They can observe the announcement thread and discussion with Read mode. Similarly to people only read posts in the forum without any account.
By running their signature campaign here, they actually are spending money and I believe not only the campaign manager, they actually have some contact points and staffs to follow up effects from their signature campaign, contests as well as discussion here and beyond it like accusations. If they see something valid and big, they will certainly join the discussion and answer our questions.
If they no longer care about their brand here, they would have shut down all marketing activities here.
As long as they are doing marketing, how they are doing it shouldn't matter. They can be here and not do any marketing and that would be worse compared to what they are doing right now, I prefer them not being here and doing marketing anyway, it's a lot better in the end. They do have a point of contact, with the campaign manager, but I think support staff at the website itself is a lot better option and should be considered their only way of contact as well.
I believe that as long as they keep the marketing going, they are going to be fine. Plus with all the art competition as well, that is one of the highest paid competitions around bitcointalk forums, and I think that should be the point of focus, the marketing, not their activity in their account.