While I don't disagree with you, Redfin has been in business since 2004. 13 years is a long time to take to kill off realtors.

I'm in the process of selling my place and I'm using a realtor (who nearly matched Redfin's seller commission rate). The Redfin agent I first spoke to proposed a generic, templatized method to sell my property - list on N realtor sites, email my contacts, take nice pics - while the realtor I went with lives two doors down from me, knew the quirks of the HOA, had working knowledge of what potential buyers were looking for in my community based on recent deals he had been part of.