IPFS is still the default loading method. Nothing changed. It's just torrent taking relay if IPFS isn't loading the video (most likely for new uploads).
Good job on finding this little trick, that's exactly how I do it for debugging purposes as well! You can do it with 'magnet' as well now too to insert a custom magnet link (but if you dont seed it with the webtorrent app, it wont work)