LOL.. I can certainly feel your shock/suprise/disbelief at these stories...
I would have thought it was all rubbish too.. until i had a migration/scattering myself into the head... Noone knows what migration feels like unless it happens to you... its revolting beyond words and once you experience it.. I don't think you ever recover and get back to normal life... its revolting...
It took four years at least of cleansing before this happened to me...worms travelling in a group migrating up the neck and into the head... and then, five months later, migrating back down... (not in the toilet yet though). I had been cleansing and doing all sorts of protocols.. it was only when I became really aggressive with my cleansing that scattering/migration occurred...
I would have not believed it until I experienced this nightmare for myself.