Down syndrome boy and normal girl marriage

I saw these reel today that made me so angry. It showed a guy with Down syndrome married to a poor, normal girl. The girl looked miserable, and it’s obvious she didn’t want this. What makes me even angrier is that the guy’s sister, who was in the reel making dance videos, also has a daughter. I can’t help but think—would she ever let her own daughter marry someone like her brother? Probably not. It feels so hypocritical and cruel. How can someone force this life on another girl while protecting their own family from the same? It’s just pure evil. I’m furious that people can destroy someone’s life like this for their own convenience. What are your thoughts on this kind of hypocrisy?