That might sound like a convincing argument while a negotiation, but IMHO, remote or not, salaries should be negotiated based on skills of the worker and not the cost of living of his/her location. Ultimately, you get what you negotiate for.
Eventually this market should lead to people moving to lower cost of living areas because they are more likely to be hired for a livable wage there.
If you're marketing to someone based on your skills, which are rare and impressive, then you won't have any issues charging a high rate, regardless of your local cost of living. If you bother asking for it.