Humans have been consuming flax and soy-based products for thousands of years.
At this point, the burden of proof is on those claiming that they have hidden harmful effects that have someone escaped thousands of years of human consumption.
yes, although that burden of proof may indeed eventually be met for either phthalates in general or some specific phthalate; as with soybeans, there's strongly suggestive evidence that doesn't yet rise to the level of proof