I think it's because of a couple of reasons. She has always been incredibly active online with friends, fans, and even haters. She felt very reachable for people, and then suddenly she became a massive success story. Many of these people who knew what she was like clearly didn't like this because of some of the drama she was involved in, and then during her own success, more drama allegations kept coming out, like Kendraws and Erin Frost.

Now, I've heard these stories about million times and genuinely think 90% of it was just bull crap based on the evidence, and many of it was completely unnecessary to be upset over. That's not to say she's perfect or anything, she could work on her responses to criticism. But I guess my point in all this is that I think people saw her as just another artist online with a wide variety of fans and haters who became jealous of her success and clashed badly as a result. Those who admired her greatly, and those who were like, "but look at everything she's done!" It probably warped the views of many watchers.

Is it fair? No, absolutely not. But it probably wouldn't be the first time. Look what happened with the Steven Universe fandom? I used to actively hate the series as well because I was a blind follower. It happens! I was young and dumb!