Andy here's a tip I'd suggest - especially on any story you have that is getting external reads.

I love that the bottom of your article, it's very "clean" -- many writers load it up with too many calls to action -- however, I suggest you show that one link: the membership referral link.

If anything, those articles with that many external views - are exactly the eyeballs to whom to market to sign up for medium. Getting those monthly renewals add up and can be nice to have!

Nothing is a guarantee - but I believe it's helped me. Sharing this in case it helps! Cheers!