This is the story of the online world, in which social media popularity contests define and categorise what most people see on a minute-by-minute basis and the very idea of looking for something else is simply unknown.
Of course Medium curators cannot advise what they're looking for - they don't know. They've never known. There's a different idea (pitch) every week as to what the site is providing, delivering, aiming for.
Publications build loyalty through consistency and that will not change. But this site is probably not the right one for serious fiction, poetry and literary writers or publishers.