IPNS is currently pretty slow when it comes to retrieving content. Updating DNS records ensures a faster user experience for those retrieving the content from gateways. That being said, Protocol labs is currently working on speeding up IPNS so hopefully IPNS can be relied on more in the future.
Their gateway supports ipns but the DHT is so slow that for most people it’s just going to time out. If you try accessing ipns content you just published via ipfs.io it will take ~5 minutes to resolve which is a pretty long time. I think at that point you don’t really care about using something like cloudflare, for the cases where it’s faster it just works the way it is now.