The last main thing that I use domains for is verification (is this really "google.com"?) but even that is 1. Not effective (yes, I am definitely "goog1e.com") and 2. Mostly replaced by my browser doing the check for me (for example via my password manager which only fills in credentials for the correct domain).
This is literally what I'm saying and the main point I'm addressing in the second and third paragraph of the comment you are replying to.
However, you make a very good point with QR code: this is another argument for why the actual domain name is not that important.
So what is the point?
How does this system facilitate "discovery" when no one can discover your website by the human readable name you would like to assign to it?
You could imagine a system where you manage your DNS root zone locally ("hyperlocal") and there is NO consensus on what it contains. The DNS resolution mechanism could support such a concept. It is only the de-facto rule of ICANN over the root zone what makes DNS names globally unique. And IETF/Standards do not allow to diverge from this.
The GNS specification explicitly allows it. That is it. It does not mandate that users must bootstrap their root using fancy hand-picked petnames. In practice, a common set of root zone entries will very likely exists. The specification does not mandate the governance.
There could be a world in which DNS names as we know them today are resolved using the GNS resolution mechanism with no tangible difference to the user.
Granted, most people do not bother using this feature, but it is also true that most non-technical people don't even bother with typing a URL, they use a search engine as a proxy anyway.
In fact it would be a good idea, ecologically, to have a system that educate its users to give their own nickname to website they visit often and use them rather than performing a search query. Especially if it is as simple as clicking a "bookmark as 'xxxxx'" with xxxxx being the default name of the service/website in your browser, with a TOFU principle :).