Time will tell that the introduction of the paywall on Medium has been one of the worst decisions in publishing history. I think that Stripe is still the only, and therefore limited payment option for writers.
The self-proclaimed most popular publications on Medium have too many Divas as editors for my taste. I conducted a test recently. My article was rejected by one of these publications on Medium. I deleted it and submitted it as an answer on Quora. I got 120K views in two months!
So, my word of advice, don't bother with Medium publications. Invest your time and creativity in submitting your writing pieces to Quora Spaces. Medium publications like to brag about the number of followers. Well, I launched a space on Quora also as an experiment. I have more than 30K followers.
Truth to be told, your Medium articles can and will be positioned better on Google. I'm not an SEO expert, but this is a fact. However, when it comes to the number of views and long-term exposure, Medium is useless.