I have never known vore enthusiasts to shy away from pedophilia. Their sexual desires are entirely disconnected from reality, so it's generally safe to automatically assume the worst.
A big part of the fetish seems to be the victim being made (more) small and helpless by the experience.
I'd say it's more likely that, given the minimalist efforts that go into constructing these things, it's about as easy to see coming as who the "real killer" is on an episode of Law & Order.