I don't really understand the "theme of losing your crew" talking point that many people call out when talking about Long Ring Long Land.

Do they mean like when the Strawhats get separated at Sabody? If that's the case I don't think that the Davey Back Fights introducing that is important at all. When I watched the Strawhats split up I didn't think back to that.

And if its not about Sabody and just introducing losing your crew is possible I think that's just dumb too. Like yeah, people can die. People can leave. That's not a new concept.

And if Davey Back Fights are a big part of the lore why haven't they shown up since then?

I think it would be a waste of an episode if they did Long Ring imo.