I'm sensitive too. I'm spent hours, days, weeks overthinking negative comments, though I've yet to deal with any on Medium yet.
I'm a musician and I play my instrument in an unorthodox fashion, and people went out of their way to send me personal messages telling me how terrible I play and all sorts of colorful nasty things. I haven't posted any of my music online since then and that was years ago.
I respect your ability to feel what you're feeling and come to point of resolution with it or at least get on the path to healing. It's not always easy for the sensitive ones, but when we do, it's a great thing.
Thanks for sharing this poem! It's inspiring.