Why it worked
The video likely performed well due to its easily digestible, listicle format presenting commonly known information in a surprising way. The rapid-fire reveal of each password, combined with the creator's engaging delivery, keeps viewers watching to see the full list.
Summary
The video lists the top 7 most common passwords in the world, starting from number 7 and counting down to number 1. The passwords revealed are 123123, 111111, 12345678, password, picture1, 123456789, and 123456.