No, there was never a time. Luffy was always no. 1 in popularity polls.
How did you know Kaidou didn't fight Mihawk? and did Kaidou fight Rocks? Whitebeard? Even then the 5 images are people who can fight Kaidou in one piece universe. It didn't specifically say 'terms and conditions apply or any list like Kaidou only fought a few people. And according to your logic, Kaidou fought Oden 20 years back and not the present Kaidou, so 20 years back Kaidou and the present Kaidou are not the same.
Also, it is a present Kaidou feared when Bigmom came to wano which he didn't do with Oden when he fought him.
Dumbass, King didn't knock out BM, he just cut the ship. Bigmom can fly but didn't fly, so why do you think it was? She was not unconscious. Despite being O-Lin, she was a physical monster and capable of hurting the queen. The only thing she can't use was haki and probably full potential of her DF. And yet Queen physically knocked her out. You said that Bigmom can fly and save herself before falling into ocean but why she didn't do that? can you explain? is it the plot? or BigMom was not in the right mind? either way, King didn't 'knock' her out as Queen did. King just cut the 'rope'.