I like it because it centers around the writer not the content.
I used Medium before. Medium treats your data as its a generic post about some topic. If I wrote an article on AI, it would recommend other articles about AI from various authors. That's fine for some purposes, but as a writer trying to build an audience, I'd like to think people come to my post because they like something I have to say and would prefer a recommender system to recommend other posts by me.
Medium's monetization model is to get people to pay for Medium articles, not those of the author.
Another gross example of this is that you cannot easily see a publications from a publication. On a site, you see a tiny link called "archive" to see a writer's historical posts. There you can filter on month but can't see a dump of everything the person has written. They don't even offer "load more posts" or a calendar view. It's very hostile to the writer.
I had around 1k followers on Medium but if I posted something and didn't publish it on social media, I would get maybe a few dozen readers. Whereas Substack I consistently get around 20-25% of people that are subscribed open my publication.
Is there something between Medium and Substack? Probably, but I don't really care to look around. Substack offers you a chance to build a reader base, gives you access to emails and lets you easily monetize directly without being part of the global pool of generic low quality articles like Medium does.
I wrote more about it here.
https://mleverything.substack.com/p/migrating-from-medium-to...