Also, I wasn't just thinking Dredge hate with this card. Other decks run Bazaars too, mono-red STAX with Goblin Welder, comes to mind.
Dredge might not be the only thing that runs Bazaar, but it's certainly the most prevalent one.
Yes, Hurkyl's buys you a turn time against a resolved Key+Vault. That doesn't change the fact that it's predominantly there for your Shop matchups. With that in mind, if it's failing at it's primary function, then the secondaries are pretty much moot.
Also, pretty much any deck that run Bazaar is grave dependent, meaning that Planar Void is a stronger deterrent than Caress. Simply put, any deck I can think of that includes Bazaar will happily see Caress hit the table if the alternative is Planar Void.