Who freaking cares. The guy is running an ad (real or not). Doesn't the seller have some responsibility in the transaction? People have been doing this since the beginning of time in the real estate business.
If you aren't a motivated seller don't call him. Problem solved.
If you are a motivated seller and need to pay rent, as someone above mentioned, then the seller may be grateful to sell in a down market so they can stay at home.
People bitch about everything on Pinside. Literally, everything. These are only games for most of us. Not ******* family heirlooms.