I have visited numerous homesteads with family members with Downs Syndrome. Much depends upon the level of functioning. In all cases they were active, productive members of the homestead. Yes, they were pecked, knocked down, and bit from time to time. They also learned to get up, brush themselves off, and continue with their work. Some assisted family members without disabilities. Others had their own job assignments they carried out with pride. Organization is important. Color coding can help.
Years ago I job placed a person with Down’s syndrome on a small Dairy farm. The old farmer and the younger person were a good match. The only problem was that the individual with Downs Syndrome had spent his life being told to go to the bathroom to urinate. Of course, no self respecting farmer ever did such a thing.