Question Is Luffy the only character who has "run out of haki"?

[Rein Avara]

My Oda-copium is that this limitation for Luffy's awakening is actually going to lead to something at some point. He keeps doing stuff to both muddy and clear the waters when it comes to awakening, especially for zoans.

Would love for Oda to shut me up, like a chapter where Luffy and or G5 is just out of control, and we're like "Yup, so this is why he nerfs him so much"