Sorry. Every gif is Tom Hiddleston for some reason.
Not every single story is driven by overcoming the protag’s serious personality problem to effect/fail to effect a change.
Those are mostly about Indiana Jones, though.
So. Yes. It is true. Don’t kill yourself trying to drive your swashbuckler with a flaw. But give that protag a big personality, a fearsome antagonist and a wild ride of an adventure.