I don't think anyone cares if pedophiles use it. They only care if it will work for them. Heck, if it keeps pedophiles safe that's a pretty good endorsement. I think the primary road block for most people is not seeing a use case combined with the technology not being readily available (excluding a few apps that aren't compatible with each other).
I think you're grossly under selling the emotional response the larger public user base would have to being associated with paedophilia. Albeit, even if it's tangibly associated via an app.
Unfortunately that's the nature of the beast. You and I, in addition to our peers would probably see it as an endorsement (as you coffecfly stated). But we're not Joe Bloggs.
The feeling of disgust is so easily manipulated amongst the greater public.
