To me Medium seems to be much easier to use. I am on Substack and I am not really sure I understand how to get around just yet. I have not make my first 10.00 from Medium. That means that I am not here for the money. Maybe my writing sucks and that is why I am not earning money. I write about what I am passionate about. I love the community here. On Medium I get engagement. On Substack not so much. Maybe that is because I am not one of the cool kids that actually makes money for their writing.