It's Medium. Do your own curation. It's petty simple, just follow the authors you find competent / readable / interesting / whatever, then use the 'following' tab to read just those authors. Use the recommendation engine (or other tags) when you're looking for something new, have the patience and time to sift through what the engine thinks you might be interested in - or what has a tag of interest.
That said, this author appears to not be to your taste. You can simply not follow them, or if you insist on using the recommendation engine, 'mute' them abd the engine will stop showing you their articles.