That's a lot of guess work on my part, but I've yet to hear a better explanation for why there are hordes of homeless in SF.
Translation: I like my guess better than the explanation I'm responding to, so I'm going to label it as "better", even though I've just admitted that I have no data or idea of what I'm talking about.
The original post had no more data than the response. This post simply demonstrated that you could draw the exact opposite conclusion given the same amount of data (or lack thereof). Thus, it serves to invalidate the original remark without necessarily itself being correct.
Translation: I like my guess better than the explanation I'm responding to, so I'm going to label it as "better", even though I've just admitted that I have no data or idea of what I'm talking about.