We were both wrong – although the man in the video learned in kind of an embarrassing way.
Penultimate means “next to last” or “second to last.” It's probably because it adds an emphatic extra syllable to the word ultimate that people think it somehow means “more” than ultimate—but it really means less.
Watch the video now: https://www.tiktok.com/@drbradysmith/video/7267208007870696746.com