Another thing I would echo here is that you don't necessarily need a CMS / WYSIWYG editor to run a great blog. A tiny script that dynamically compiles your markdown flavour of choice and has a nginx reverse proxy in front of it will be able to survive a reddit frontpage hit on a $5/mo vps, and it will be dead simple to set up.

If you're looking to move off Medium, give it a try. If anyone is interested I'm happy to share the mini server I wrote to compile pug aka jade / stylus, which is what I use for my blog.