Just speaking for myself, but "Yamauchi No.10 Family Office" is a perfectly attractive title, and the intrigue of the title is the entire reason I clicked it. (And I'm glad I did!)
I would have ignored it, hid it, and probably flagged the submission without looking at the site if I had seen "The Craziest Website You Ever Did See" or some other hyperbolic clickbait bullshit.
Across all submissions, HN has to push back against the escalation of all the various sites that are truly worth seeing to different subsets of readers.
The goal is to help readers figure out whether they’re interested not to “one crazy trick” or “you won’t believe #7” them into clicking through.
"Yamaguchi No.10 Family Office" is actually so mysterious I just knew I had to click it. But I agree it's really understated and that kinda makes it even better :D
Update title to Yamauchi No.10 Family Office crazy website or something