This is a discussion on whether or not it is better to use it to announce new domain names post-suspension than Wikipedia, not if it can sustain petabytes of data.
As nostr relies on gossip, there is no guarantee you will have access to latest address.
But if you are going to build some nostr-based “resolver” into a browser you could instead use any of the other protocols - 2 of which are designed specifically for resolution, and the other already having a robust resolver implementation built on top of it?
I quite like nostr, but let’s not pretend it solves every problem.