From my personal experience, depression is something that's there whether you think about it or not. Of course if you just think about it that'll just make things worse. But I don't think that's what this post is saying.

The conclusion is - "The majority of people are still uncomfortable when I casually mention my depression, but that doesn’t silence me. I do this not to elicit pity, or to be inspiration porn about overcoming obstacles, but to normalise this – people like me are here, everywhere, you could be me at any point in your life." and that sounds fine to me. If someone asks how you are, it is a positive thing to say you are dealing with depression to normalize it. I would probably not so it for everyone, but to friends and Co workers I think it is ultimately a good thing.