Medium.com doesn't expose too much meta data (og:image, descriptions, etc.) for articles in their RSS feed, so you couldn't import them into Craft CMS. This plugin solves this issue: when Feed Me fetches the feed, it checks if it is a Medium.com feed. If yes, then it visits all the articles in the feed for their metadata informations and add those as additional nodes on the feed, enhancing the feed provided by Medium.com.
Important note: by it's nature, this plugin WILL slow down your site (when
EVENT_AFTER_PARSE_FEED events happen), as Feed Me has to fetch and parse all pages in the feed. This takes time, which is usually around 5-10 seconds.