Your mother is saying nonsense. My mom knew I liked girls when I was 4. She thought that was normal, because I’m a trans woman, but it was obvious even then.
I’m sorry. You don’t deserve invalidation. You deserve affirmation. You don’t owe your mother anything, but it’s possible that your dad or a grandparent can be an ally for you with the rest of the family.
How can you tell them? I don’t know. “Hey, I have something important to tell you.” Will probably force the issue.
You don’t have to come out, but if you want to, that’s how I would start.
Agree that rent control on it’s own can be counter productive. Section 8 is good as a wealth transfer, and making it into an entitlement would be better still as a transition to housing as a human right. I think about housing much like I think about healthcare. The market can still exist and compete with the government provided option, they just have to compete with free.