Yes, Roger, people really do believe this stuff.
I am so completely tired of the "I don't have to support my position except for ENERGY and QUANTUM" that is the chief peddle of woo-meisters everywhere.
If water remembers that it had a bit of garlic in it (as if it was some nebulous thing rather than a collection of interacting molecules of hydrogen and oxygen), even after 30 fold dilution, then it also remembers all the feces and urine it's had in it, as well as dead and decaying things, pathogens, parasites, toxins, heavy metals...yeah. Homeopathy is a hoax.