No if you unplugged the other relays you’d only see a limited feed, this is not a relay meant to replace all others, quite the opposite it’s a small private one for my friends, but because of that it should be high quality.

As for others I recommend:

wss://bitcoinforthe.lol (full disclosure: this is my paid relay)

wss://relay.fractalized.ovh

wss://brb.io

wss://nos.lol

wss://relay.utxo.one

wss://nostr.oxtr.dev

wss://relay.stoner.com

wss://relay.nostr.band

wss://nostr.pleb.network