Of course it is, but thats very different than the egg being made of "synthetic chemicals" - which spinosad is.
I think most of the organic movement is a whole bunch of silly based on the naturalism fallacy.
This is one of the areas where organic gets tricky (and a bit silly). Spinosad is approved for organic use, but it's actually almost universally synthetic at this point (not that it makes a lick of difference in effectiveness/safety) - but some people seem to have an issue with anything man made.