Except this bounty is when Loki didn't have his df
So current Loki > flashback Loki >~ Kid/Law
So current Loki > flashback Loki >~ Kid/Law
It’s very possible that Loki’s bounty was given in between him eating the DF and getting captured.
Him being 2.6 bil without his DF basically means he’s on par with the yonko.
While that is possible, Loki is also a random newly introduced character with relatively little relevance to the overarching plot. He’s not a leader of a major faction, meaning he can be a minor villain at best.