Too far the other way will likely lead to a pseudo ban on Sesame seeds. It just wouldn't be worth the risk. Or the cost of it will get pushed on the 99.999% who won't die from a single Sesame seed.
I know there's a lot of things that work like this (handicap ramps for instance) but if you don't draw a line somewhere it does get overly expensive.
"Fine. Now _everything_ has Sesame in it. What are you going to do? _Settle_ with us?"