I think that article title, and by proxy this thread are a little sensationalist. I found the article pretty interesting. She wasn't cockily coming out and saying "Lara should be gay", the topic of conversation happened to move into gay characters in gaming. Rhianna mentions at one point there was a part of her that considered what it would be like if Lara was gay, and the writer (typically) jumped at that idea and plastered it all over the page, in big quotes and in the title.
I mean, she approaches the subject very delicately in conversation, mentioning how after the controversy surrounding Tomb Raider pre-release she wants to be extremely careful of her phrasing and how she approaches gender and sex related subjects. They talk back and forth about all the things you guys in this thread are debating now, whether a gay characters orientation should or must play some role in their story and development, or whether it should stay quiet as a little "side-note" to try and normalize the idea. They also discuss whether gay characters should be all-powerful badasses to serve as positive media figures for the gay community, or if they should endure the same struggles most real world gay people do, such as discrimination and bullying, confused or repressed self identity, etc. They also talk about that problem in terms of female vs male characters as well, in that a lot of female characters, whether out of laziness or fear of negative reception, are practically "male characters with boobs" in that they're female on the outside, but act identical to the masculine no-fear "badasses" that are typical AAA male characters.
She admits those kinds of decisions are difficult and that she doesn't know the answers, unlike the headline suggests. I know it isn't completely evil to be sensationalist in news, pretty much all news contains some elements that sensationalize to grab our attention, but I feel as if a nice conversation style-interview with some thought-provoking points is being entirely missed out on because the writer chose to promote that one idea as if Rhianna had some sort of agenda for making all your favorite beloved characters gay.