Don't use oda is a misogynist to dehype Boa man.
What I'm saying is, croc, a warlord, was shown as pretty weak in alabasta compared to later. So oda changed his mind/regretted that. He respects warlords. After all, they are one of the main reason one piece is this long.
And Boa, she has went so long with out any super impressive feats or anti feats. In a sense, oda has saved her for the end game. And the warlords are all getting massive hype recent chapter. Like, jinhe got massive bounty because he was in warlords 2 years ago...
Considering all that, Boa has to show something incredible, or it was a waste to save her for this long just to use her as a damsel in distress.