Off-topic, but now I can't even read corporate blogs because Medium is forcing me to log in. Sigh.
It's a great ploy, get authors (who probably don't realise there is now a content gate) to post on your site, then start to charge visitors.
I just stopped logging in (because it saves the "free articles read this month" between sessions in a way I can't clear) and instead delete local storage every so often. Seems to work but it's super annoying.
I bet it's the first one because if it were the second I would move off of medium.