1) Not all cats react to carrageenan.
2) The amount will make a difference to those susceptible. trivial amount -> trivial effect for most, unless super sensitive.
None of my 14 had any problem with Wellness Turkey and Giblet canned for the 6 months I was feeding everyone that so the juvenile kittens' development would be as good as possible. We're feeding friskies Turkey and Giblet right now, due to budget, plus the juveniles are about a year old and should be done with major growth.)