Reagan closed the mental asylums when he was governor of California with the Lanterman-Petris-Short Act
And even in the context of California, none of these homeless crazies are born here, they weren't the result of that legislation, and it's all democrat cope to blame their own mismanagement on someone else. We barely had any homeless people at all in the 2000s. You had to go to Skid Row or Venice. Now they're just everywhere, in every city. I'm sorry but I do not believe the homeless population reproduced and grew like Africans. And you can ask them yourselves, they're always from out of state. At some point they get a greyhound and come out here. It's the way of the homeless.
I personally don't like Reagan but the institutional cope is a state-wide lie that somehow went national. Federal moves to community outreach were owed to Willowbrook State School causing a massive nationwide controversy after the horrible conditions were exposed by Geraldo Rivera. They would've happened with or without Reagan, I suspect.
If anything you should hate him for amnesty and taking your firearms on the back of a fraudulent vote.