It's your body, if you wanna put rocks, shells, and coral in your body after reading the research that proves it's damaging in the long-term, that's CERTAINLY your choice.
As for me and mine, there's WAY too many poisons & toxins out there for me to be willingly and knowingly ingest something 'natural' that has been proven to cause harm. My body has ENOUGH burden just dealing with the things I can't avoid, than to be putting things in it that I CAN avoid.
I choose to utilize Lugol's because I cannot get the amount of Iodine my body requires from the various forms of arsenic-laden/polluted/toxic seaweed that are found in the ocean. I feel 'inorganic' Iodine (that has been utilzed for centuries by healers) is by FAR the lesser of the two evils.