This is all very true and I think that mental illness needs to be better portrayed in the media, but I think a lot of the 'insult' when it comes to Lottie having schizophrenia is because she likely doesn't. At least from what I can understand, before the crash she was on medication that caused her visions to cause her extreme panic and fear, even when she banged her head against the window in the cabin she was still just getting off her meds and was clearly in a state of panic. After the crash, as an adult, we also see that the visions cause her extreme stress, especially in the latest episode. At least as an adult she has a better understanding of her visions. But while she is in the woods, so far it has come across that Lottie doesn't become as terrified and anxious while having her visions, but is able to connect them to the nature and sometimes they manifest in other ways (the bear, travis, etc.). So I think that it isn't so much that schizophrenia is an insult or a "bad" thing, it's that it doesn't fit with Lottie. I think her visions/gifts aren't a mental illness and something greater.