But behind the hype, GE ‘Golden’ rice is environmentally irresponsible, poses risks to human health and could compromise food, nutrition and financial security.
My take from this: It may be that they targeted more than the safety, but also the possibility of gene flow (to other rice crops including wild rice), possible effects on biodiversity, and the ever-present patent issues that come up with GMO's.
Scanning down the page though, they don't specifically say why it poses risks to human health other than some hand-wavey stuff about how it would make people rely on rice instead of providing other sources of vitamin A in their diets.
They also brought up that at least one experiment with the rice on children in China wasn't done ethically, and also that this could be imposed against people's religious beliefs.
It mentions the cross-contamination gene flow stuff, but I thought because rice was self pollinating that that wasnt as big an issue with GM rice. (I'm not an expert by any means.)
Their general argument seems to be "new way bad, old way good" without any scientic evidence. They didn't have to convince scientists though.