I have a medium blog. I've had a few posts got >10k reads within a month. Almost none of those reads came from Medium itself, but rather from the various outlets that have linked to my post, and Google.
The only reason I currently use Medium is that people are more likely to open a Medium url when it shows up in link aggregators. People trust the familiar url far more than www.mypersonalblog.me - and it'll never get blacklisted / shadowbanned on reddit.
Oh, and claps. I like the claps.