I very much agree. This is why I run my own blog, both here and on tobolaski.com. I feel like if you want to write, you should take credit for it. You also also own your online presence. You should own the domain. You should be able to choose how your words are presented.
I would never use something like Medium. While it looks great and great to use, it is made to be exactly opposite of what I just described. Building an audience is tough but, its a worthwhile pursuit.