If I was working with an agent, I’m sure they’d discourage me from that listing, but as a seller in a reasonable market, I’m willing to give up a few possible buyers to save 5-6% on a 7-figure transaction. (I’ve also seen FSBOs that offer X% to buyer agents.)
I will say that agents did do some work to make the transaction complete on both of my house purchases. Negotiations after the inspection can be tense and a good agent can help both sides get to the closing table.