Does this mean you get benefits (like free housing, healthcare, and money to buy food with) if you earn less than 105k/year? Or what does low income threshold mean here
It's one criteria for eligibility for social benefits that can include being able to live in certain kinds of public housing. Usually there's a lot more criteria that go into it, but income is a fairly major one.
[0] https://www.hcd.ca.gov/sites/default/files/docs/grants-and-f...