I don't think it will affect Adriana, she proved more then once she has no problem with transgenders, even talking positively in public for a transgender model in an interview by her own initiative.
The press already made it Adriana's show this year, whatever VS wants to promote it this way too or not.
People will watch and praise her goodbye regardless of this issue VS caught itself into, she is more representative of the brand then any CEO, and she has always said and worked by the message that VS was about empowering women and making them feel confident and good with themselves. The fact that VS changed in its values is imo one of the many reasons she changed this year her decision of still being with them, along with other factors (like not using her anymore for anything because she appeals woman and not teenagers...).
But in the future I agree, this stupid and offensive behaviour is going to cost them, a lot.