In my opinion, a couple of things are wrong with Medium.
You know, I'm one of those people who think knowledge is free and information wants to be free. This means that information guarded by someone demanding payment, or at least logging in, will be found elsewhere.
As a user, I see no information that belongs exclusively to Medium. This means, that for each article there is, I can find at least one alternative in other sources, it's just my information bubble preventing me from (google, this is at you!)
Good authors deserve payment of some other form of gratification, and I see nothing wrong with paying the author, by seeing ads, or by funding on Patreon. What I don't like is being tracked by the platform. Despite that, nagging the user in a way Medium is - is wrong. You know, I gave it some thinking, and I think that I'll rather be paying Medium user as an author, than as a reader. This is hilarious ;)
For the moment - when there is a piece of content that I want to read - I switch to 'incognito' mode or just clear the cookies. Everyone loses.
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We strive for transparency and don't collect excess data.