Well, escalating health problems in human populations consuming GMOs
Correlation doesn not equal causation - and citation needed.
combined with lack of proper testing of the highly complex health and safety implications of their use
The health and safety issues aren’t really ‘highly complex’ - genes make proteins. All current GMO’s that I’m aware of consist of a single gene taken from an existing organism, in order that the target organism can produce the protein that the gene codes for. Many of the donor organisms were already in the human food chain - so we were consuming that protein already.
combined with their poor performance record
If they had a poor performance record, farmers wouldn’t preferentially buy and grow them - but they do. For example, BTCotton means you have to buy and use much less insecticide, which saves farmers money, saves the environment and increases insect biodiversity:
The use of Bt cotton in China has been shown to dramatically improve biodiversity, unlike broad-spectrum insecticides which kill everything, pests and predators alike. The Bt protein only affects the insects which bore into the crop, is entirely safe for us, and has led to insecticide reductions of 60% in China and 40% in India on cotton. http://www.marklynas.org/2013/04/time-to-call-out-the-anti-gmo-conspiracy-theory/
I assume you mean ‘industrial agriculture’, when you say:
combined with them being associated to an unsustainable agricultural model makes this a valid concern.
The same industrial agriculture that currently produces most of the worlds food:
For example, if we had tried to produce all of today’s yield using the technologies of 1960 – largely organically in other words – we would have had to cultivate an additional 3 billion hectares, the area of two South Americas. - http://www.marklynas.org/2013/04/time-to-call-out-the-anti-gmo-conspiracy-theory/
GMO’s already massively reduce the reliance of farmers on pesticides, have the potential (if they’re allowed to) - to massively reduce farmers reliance on fertilizer too - therefore hugely increasing the sustainability of industrial agriculture, while at the same time increasing yields and reducing land use.
The choice isn’t between GMO’s and some organic utopia. Organic farming cannot feed 10 billion people without increasing the amount of land used for agriculture, thereby destroying huge amounts of the earth’s remaining ecosystems.