Earlier quoted context omitted.
I think it's kind of ironic that you mention how his charity isn't 100% altruistic, but then juxtapose it with "social safety nets" - by which, I assume, you mean tax-funded welfare, which is forced on people by government and has nothing altruistic about it on any level.
Actual altruism is very rare. The level at which it exists in the United States is nowhere near sufficient to solve this country's homelessness problem. By all means, write inspiring news stories about pure generosity when it appears, but this is not one of those times. This is a man who looks at our collective unwillingness to help our most needy and sees a religious opportunity. Some voters support safety nets out…
It cannot be called altruism. People you're referring to aren't giving their resources out of free will - they support government taking other people's resources, under threat of violence (which the government has monopoly on) and redistributing it to others.
> housing as a fundamental human right
How can a product of someone else's labour can be a human right?