I feel like you have weirdly high standards for "not a pod person" 😝
Like, the situation the PCs presented didn't have such incredible urgency, and even if it did, the fey can't respond at superman speeds anyway - compared to the multiple days it will take to muster up forces, scout the fomori, and launch an attack, a few extra minutes to have more info about the situation seems well spent.
But also, why is the example with Batman the "good" one? Because Superman is springing into action with zero delay while a second person asks the questions? But ...
* Probably Superman can beat the pod people just fine even with a small delay, and reverse the process (and if he can't reverse it, then multiple people are likely already gone in the time the child took to find Superman).
* If the pod people *are* so powerful no delay can be made, then Batman being late could also be disastrous.