I've noticed this problem too. Usually however, it's a questionable client or job posting anyways, so I just pass on it. After a recent client experince however, I stay away from clients who are more then 3-4 hours ahead or behind me.
I'm aware time zone difference don't matter to some freelancers, but it does to others. Neither preference is better then the other. It should't matter how we choose to schedule our time, but it should matter that Clients sometimes fake their location to scam freelancers.
Thank you for discussion, everybody. It is interesting to hear different opinions about the importance of location for client-freelancer relationship. Additionally, we are going to do more in the near future to verify users' identities.