There's a big difference between doubt and skepticism. I am skeptical of the events at Poppy's funeral because nothing every came out of it that can be positively linked to the notes. Doubt would be straight up dismissal for reasons that may or may not fit. I'm questioning the true nature of what happened that day and asking for evidence to backup or dismiss the theories and rumors. So far no one has been able to give me anything but speculation and wishful thinking. The truth is out there, but it's likely nothing at all like what Q followers want it to be.