Since these kids are the reason we started, and why we have continued all this time, I wouldn't block them for asking too many questions or starting too many threads.
I wouldn't go for the whole blocking thing myself, but it's certainly worth letting this person know that he's:
A) doing himself no favours by continually searching for something to be afraid of
B) potentially dragging scared people backwards by posting this stuff, especially now when it looks like most of them finally have some relief.
Sometimes you need to be snapped out of it, when your anxiety is so bad you can forget how your behaviour affects the people surrounding you. I'm certainly not trying to hurt the kid, I'm just bluntly telling him what he's doing in the hopes that it'll shake him out of it.
