I post links to all my Medium stories on Twitter, Facebook, LinkedIn, and Instagram, and the Medium posts are auto-fed to Muck Rack (a journalists' site). It seldom generates much traffic.

But I do it mainly because it takes only 30 minutes or so a day to do all of them, so there doesn't seem to be much harm. And there's occasionally some benefit. On the Medium instance me.dm, I've found a few interesting Medium writers whom the algorithm here has never shown me. Are you on that one?