There’s a lot of bleeding heart people like this. They add variety to the world. The downsides being things you mention, but it’s usually more palatable than someone on the other end of the spectrum.
My idea of the term "bleeding heart" is more like "painfully aware of the plight of people (and often wants to make sure you're also painfully aware of it)", whereas the author's tone struck me as simply charity, and I enjoyed it as such.