LA is fine if you're in great shape, otherwise yeah it's tough. I have dated some hot women in LA when in good shape.
Part of the reason that Los Angeles is bad is because there are so many more single men than single women. Women can demand anything. Female fussiness for sex and relationships is high, especially among white women living on LA's Westside.
SF is definitely so, so much worse. Asian women are no different than other ethnicities there.
I believe it. There are so many East/South Asian men (mostly tech workers) there chasing the East/South Asian women there. East Asian men are more demure approachers than South Asian men, especially the Indians/Indian-Americans. East Asian women are in huge demand there.
One thing you'll notice is people trying to set you up with much older women.
This is not just a San Francisco thing. My mom got re-married in her 60s to a similarly aged man with adult children. My mom's husband's daughter knew a woman who is 6 years older than I am AND overweight. She tried to set me up with that woman. I declined.
My 35yo friend is a legitimate alpha male and his girlfriend is a 40 year old single mom with the husband around constantly. Suffice it to say he is miserable because he knows he could do so much better anywhere but there.
He needs to leave that situation. I did an approach the other day on a walking path. I saw this woman in a sports bra and she looked great. I made the approach happen. This is a 5'10" woman who was approximately 130 lbs. Her sports bra perfectly showed off her flat stomach. Very little body fat. She is an active runner. Pleasant personality, the conversation went well. The downside is that she has 2 kids. I didn't ask her out because of that. I have self respect for my time and my worth. I only deal with childless women.