Luffy said that while fighting Fujitora, a Ladmiral, and another translation states that Luffy used ''even'' for Yonko,
It's cnet128's translation;
https://mangahelpers.com/t/cnet128/releases/41745
Luffy: ''Whether it’s a Marine Admiral... / ...or even a Yonkou...!!! / I’ve gotta be ready to beat them all up!!! Or else... // ...I’ll never become Pirate King!!!!''
--- Chapter 798
which he confirms Yonko > Ladmirals.
Nope, Lakainu doesn't hate pirates. I see even after I posted the link you didn't read, Lakainu doesn't hate pirates that's why
Lakainu wanted Shichibukai Pirates to exist, while Fujitora wanted to demolish the Shichibukai system. And before that he made a deal with Squardo, a pirate, and then said he can let every other pirate escape but not Luffy and Ace, because of their Dragon and Roger bloodline.
Lakainu has no problem with pirates, that's what Lakainu fans don't even know, and its hilarious because they don't even know the guy who is their idol, lmao. That's why Lakainu fans are the worst fanbase in One Piece.
Funny you make excuses Ace being Luffy's brother, Sabo is Ace's brother as well, he regained his memories only after Ace's death, infact Sabo didn't do anything about Marineford battle, while Luffy did a lot, and Sabo inherited Ace's will, Sabo has a lot to do about that because
he literally did nothing about Marineford battle, Luffy will leave Lakainu to Sabo,
just like Luffy left the business of capturing Ace's DF to Sabo. That's Sabo faction in this series, helping Luffy about Ace related things, and Lakainu is the biggest thing for Sabo, for 2 reasons both because of Ace and because Lakainu is the top 1 Celestial Dragon lapdog (and hates Dragon because he is a revolutionary, just like Sabo), and Sabo is the revolutionary Flame Emperor no.1 enemy of Celestial Dragons. Sabo has more reasons to fight Lakainu.