@mc-leggers A few folk have expressed the same sentiment as you, and my reply is still; It isn't about grinding.
It's not about titles.
Sea of Thieves isn't a loot-shooter or MMO where the flashier titles and mounts you own, the better.
It's a game about people, and their adventures. My crew and I have probably dug out thousands, even tens of thousands of chests at this point, and we still keep doin' it. Not because digging is a hoot, but because each voyage we embark on has infinite possibilities for fun.
If a title is simply what you crave, like @Elwe-Seregon said, just go for the 500 skeleton ships. Few people have that I imagine.
But a title is just that; A title. Words under a name. In Sea of Thieves, your actions speak louder. I've met countless Sailors worth twice their salt than some Legends, and that's what SoT is about.
Let your actions and experience show how much a "king of the sea" you are, not just some arbitrary title.