It's not really insecurity, the bounty simply doesn't make sense without an explanation because it's an objective fact that Jinbe did nothing in Wano to merit a higher bounty than Sanji; which is consistent because he didn't actually go up as much as Sanji did but still enough to end up 5% higher.
I believe, or at least hope Oda gives us the details as to why he leap frogged in such a manner to exceed and match two guys that took down forces that individually hold some of the highest bounties in the story. But you have an agenda I guess keep barking till Oda tells you to sit when Sanji inevitably is shown to maintain his position in both strength and bounty, well the strength part has already been taken care of.