You are so not poisoning your children. Considering how damn unhealthy our children are compared with earlier generations and the very real possibility that the generation we are raising are going to be the first generation for hundreds of years to have a lower life expectancy than their parents I think that an old fashioned diet is very possibly a healthier diet than a 'modern' one.
Cutting out foods just for the sake of cutting them out is bull****. If it fits your macros eat that shizz. Cutting out fruit because of the sugar (in the absence of a diagnosed intolerance) is utterly counterproductive from a health POV. Fruit is packed full of trace nutrients, vitamins and minerals. The benefit of a diet with lots of fruit outweighs any supposed harm from the sugar.

Maybe I'm getting old but I can't even keep track of what is poisonous any more.