When it comes to neurodivergences that aren’t strictly universal negatives (for example: anyone would agree that DID is terrible, while modern autism advocacy strongly opposes any sort of “cure”, and even assimilation as opposed to integration), you can easily find the case that they work great as complements within larger groups. Having an autistic dude fascinated by working materials may result in your tribe being the very first one in the area that gets obsidian spears or composite bows, even if he isn’t a very good hunter otherwise.

The problem comes when an industrialized, profit-obsessed society attempts to standarize social customs, goods, living spaces and so on while individualizing responsibility for every aspect of your life despite plenty of its factors being outside any one person’s control. Perhaps you’d have a lot to contribute to society if you just had certain unusual accommodations, such as a very quiet house or freedom to set your own working hours, but companies in the contemporary market economy hisses at people who don’t fit like cogs in a machine, and having a house with very specific conditions is outside the reach of a lot of people. Perhaps you do even manage to find the means to become a very productive member of society despite the odds being stacked against you, but because the specificity of your situation means you barely have any negotiation power in the labor market, most of what you produce gets appropriated by someone who isn’t very smart, but has some capital and better “people skills”.