Xebec was a pirate for years yet most people have no idea who he is

People knowing Jinbe recently joined Luffyβs crew has nothing to do with people not knowing about oden or his one year with Roger 20+ years ago

Oden was a top tier comparable to Kaido
Yeah, the last few arcs have made it really clear to me that Big News Morgans is waaaaaay more influential and powerful than we thought. Morgans more or less actually controls the flow of this information. I thought he was being a bit of a pompous stooge, when he was ranting to Vivi, but like no, Morgans information network is that powerful. The world government has allowed it to exist for a long time and tolerated a lot of Morgans' nonsense, but I think the gear five stuff is going to be the actual breaking point for them.
People only get information from the world economic journal, and sailors generally. How many people actually have Den Den Mushi powerful enough to routinely contact other islands miles away from them?
At least half, and possibly even more of that, of the known civilized world in one piece, most likely get their information about pirates in the world from the WEJ.
Like, why would some random person from the east blue know who the hell rocks is? They are literally more terrified of people like Don Krieg, because those are the pirates that are actually trying to rob them.
Even Roger feels like more of a legend people will bring up randomly at the bar in this era, rather than a certified public figure.
We have really underestimated the level of censorship the world government has put forth. Davy D. Jones, Xebec, and the Davy Clan are so problematic for the world government that they don't even want people to know this guy was real.
That's crazy