Torrent traffic, file transfers, VOIP and all the other non-HTTP type traffic that Cloudflare just breaks by default make up a good chunk of the traffic you see on the web. That Cloudflare pitches itself as a one and done solution with minimal configuration just nakes this worse, since website owners generally won't bother to set up custom rules for RSS feeds and the like. Additionally, if even 1% of the RSS feeds that were broken by cloudflare were emailed to you, your inbox would be flooded.