My theory would be that she indeed "has it" in some capacity(autism is more a like a set/spectrum of disorders put under an umbrella term, which can range from severe mental impairment to the ability to function toltally "normal"(most often seen in Asperger's) in the vast majority of everyday situations) but its being exploited to no end by the agency which is co-managing her socials. I remember her tweeting about it when she was absolutely at the start of her career, it was just a comment , so no attention-seeking in the grand scheme of things. The agency likely picked up on it at some time, as its been going on for months now and there are rougly 2 years between her mentioning it and the socials starting to be full of it