Correct me if I'm wrong but IPFS intends to be torrent-like in terms of re-distribution - so you can no more guarantee that the article can be found there then with ordinary torrents, which I think is hardly more reliable then a url.
The difference is that anyone can "pin" any content in IPFS. So if an article cites any IPFS resource, it can also pin those resources regardless of whether or not they're academic, created by the same publisher, etc. IPFS would make it aggressively easy for any publisher to take responsibility for archiving wayward cited materials.
