Whos adding relays to their #minibits wallet
What does it do.
Broadens the connections to look for zaps is my assumption, or as an alternative if a relay is down.
Ie allows you to find any npub and send ecash token not over lightning
Minibits uses it's own relay and few public relays as a backup by default.
You might want to send ecash to somebody who's not using minibits and his nip05 address server does not announce his relays. Then you'd need to add manually.
Or you might want to publish all your wallet comms over nostr to your own relay.