At least in Brave it doesn't seem like a "proper" decentralized implementation as it simply redirects to gateway.ipfs.io which is gateways run by the IPFS organization/Protocol Labs.

So while it works, the browser is neither natively resolving the content nor help sharing it further.

The demonstration from the video/GIF says "Support for ENS+IPFS in Firefox via the MetaMask extension" but it's also clearly using the public gateways instead of fetching the content via IPFS in the browser. Seems weird that they are using that as an example. They could have used the IPFS Companion extension and at least it would have seemed to work in the demonstration.

So while it seems to be getting there (at least the domain resolve seems to work via _something_), the implementation of IPFS in both Brave and MetaMask doesn't go the full way and enable off-internet content fetching or offline caching as a better integration would get.