Is Medium even customizable now? I've mostly been avoiding the site due to getting sick of the tacky tweet-begging UX whenever you select any of the text in a p

Is Medium even customizable now? I've mostly been avoiding the site due to getting sick of the tacky tweet-begging UX whenever you select any of the text in a post. A huge number of WP sites are professional or semiprofessional and have plugins and/or customization that allow the operators to run a business from the site. Can Medium do any of that? Are there plugins for it yet?