I used to discover blogs via the Yahoo Directory, blog rolls (where we mention others' blogs as external links to follow up), Live Journal's listing, and cross-referencing of blog posts. Google search used to surface blog posts too.
Now it's all on Medium - where I don't grudge those who want reliable hosting+discoverability and want to get paid for content, and where Medium charges for this. But I dislike that the content is "locked up" at Medium. I don't quite know how to explain this dislike, and I welcome any points of view that might help make this dislike go away.