So your complaint is about bad writing. And Destiny has always had bad storytelling. If people want to have a conversation about bad writing and bad storytelling with Ana as an example that's certainly meritted. The simple fact is there have been so many more posts about this as more diverse characters are added, and most of them rail against "forced diversity, SJW writers, leftist agenda," and so on. Most of these suggest an issue with inclussion rather than implementation. There are A LOT of people that are used to seeing characters in media in which they can see some possible permutation of their self, and when they see more and more characters with which they cannot, they see a diminishing of their potential worth and power. This makes them angry and whether they admit it or not, afraid. This is, for the most part, where most of these posts come from.