and yeah, someone making 130k can definitely afford to live by his/herself. the googler was just making a statement.
Single living in SF those $130k are $111k after maxing out your 401(k). After federal, state and city taxes that would be around $60k in SF.
A decent quality 1BR in SF (decent means no rat or mice) is roundabout $4000 a month ($48k per year).
That will leave you $12k for everything else. It is doable but you're spending more than 75% of your disposable income on rent.