I tend to agree with your main sentiments here, if exposure is one’s goal.
However, sometimes people adopt Medium.com as a personal blogging / writing platform, without any specific publication targets in mind. There’s a certain, strange freedom in not pursuing an outside publication, even if the cost is almost no attention; that freedom is the ability to write absolutely whatever one wants.
I only say this because, at least in my experience, some of my better writing on here wasn’t accepted by the publications I thought might want it. So, I made up a couple of my own pubs to help me organize that work a little better.
It’s a bit of a catch-22 because, if you want exposure, you probably need to first figure out which publications resonate most with you and then write for those. Yet, it’s tough to write for a publication prior to getting something accepted by it. If they don’t accept your work, then you’re stuck with it being without a home, so to speak. I think I tried a few submissions to Hackernoon myself before they accepted me (and was similarly excited to be in there). Of course, once a pub adds you as a writer, it’s considerably easier to submit.