That is why I call them witlesses. Their rules are based on the stupidest beliefs. Lecithin comes from soy, not blood, and so is safe (it used to come from eggs). Anything with lecithin is OK to eat (it is, in fact, one of the few soy products that I still trust).
Anything that has Satanic symbols on the package as a grounds to be banned is another stupid rule. Just about anything can be viewed as satanic. Many of them use logos in the shapes of symbols that have been used in some pagan worship at one time or another, and hence would be banned. I never paid any attention to those logos and symbols, since I know that even the straight line has been used in some pagan worship at some time, and there are straight lines everywhere.
I did, however, hear about the Lucky Charms. People in my congregation could eat them, but under the condition that they be called "Fortunate Figures". That I could never figure out, since Lucky Charms is a trademarked brand name and not a generic term. I always thought it ridiculous that we could not use trademarked brand names to refer to the product with the license to that trademark. I have heard of congregations that banned consumption of the cereal because of the shapes of the pieces. Which is absurd, since once you chew and digest it, none of those pagan, demonic shapes will still be there.