I don't think anyone is claiming it does. But what's your point, really? It sounds like a conversation that goes like this:
"Wow, Lee was likely killed by someone who knew him, another tech entrepreneur."
"Yeah, and San Francisco sure has a lot of problems with homeless people."
Huh? Discussions about SF's homeless problem are pretty irrelevant to the case at hand. And it's really showing of people's biases that, when we first heard of Lee's death, the evidence-free, go-to narrative was that he obviously was killed by a random mentally-ill homeless person.