Hmm, I mean that "thing" appears to be the opinion of one guy on YouTube. Which he is entitled to of course, but I don't necessarily agree.

Especially considering he's using Leeloo as "the most quintessential example" but then also "emphasizes that the Born Sexy Yesterday trope intensifies the dynamic by positioning women as submissive rather than equal partners", which is clearly not really the case here.

Or for example a scene early on where Korben tries to kiss her, to which she reacts with a gun to his head and says "never without my permission". Doesn't really sound very innocent or without agency to me.

I get the point of the analysis and it's certainly not completely wrong, but it seems to be a bit far-fetched and incoherent to be honest.