Very neat, when I was writing my thesis I used zotero and its firefox downloader plugin which was a heck of a lot better than dealing with the biography process manually but still fairly manual (then again, so is the process of finding references... I don't understand why, in 2019, people don't include a DOI in their references) but this seems better still. That said, this implementation in particular would not have worked well for me since, at least for the journals I frequent, availability on scihub is patchy and even for the journals which do have good coverage it takes a while for articles to show up. Zotero has connectors for those journals and the auto-downloader works pretty well until the journal rate limits you and requires a captcha for each download.