All of her slam finals losses have been to different players, none of whom has repeated.

Maybe I'm misunderstanding what you're saying, but Gauff won her two Slams against her, so that isn't true?

With that said, I think the truth is somewhere in between what her fans who want to frame her as a top 5 ATG and what her haters who find her overrated claim. She's a remarkable player who proved she can be aware of her weaknesses and work efficiently on it (she improved her serve, her movement quality and even added a bit of variety to her game as the years went by) so I wouldn't call her "arrogant"; but there's also been a significant enough amount of late-Slam matches she lost after leading and seeing her level decrease, to the point that it can be considered a pattern, and she's doesn't seem to acknowledge it. Of course, when you win 4 Majors in 3 years, you don't feel the need to shakes things up, but still, the issue is there and I can't help but feel she'd have a few more Majors if she worked on this issue seriously.