It might be the future. Right now, it’s a lot of design drafts, alpha/beta level feature flags and patches. It will probably be years until the creators of server software, browsers and HTTP clients have support for QUIC in their stable releases. If or when they do, we’ll consider enabling it too.
Cloudflare has always been on the forefront when it comes to running cutting edge technology to speed up the internet. They were early with free SSL and early with SPDY (now HTTP2) before it became common place. They are early with Wireguard and QUIC now, even though both of those technologies are clearly labeled as “experiments” and “development snapshots”.
Props to Cloudflare for pushing innovation, but that doesn’t mean everyone needs to jump on the bandwagon immediately.