https://efsa.onlinelibrary.wiley.com/doi/full/10.2903/j.efsa...
Key takeaway: "However, more recent research has cast doubt on the relevance of rat studies to the human health of erucic acid. Rats are unusual in their inability to process erucic acid, and the symptoms in rats caused by a diet with high levels of erucic acid has not been observed in pigs, primates, or any other animals."
In any case, mustard oil has been the primary cooking oil in India since time immemorial, so if high-erucic acid cooking oils were a problem, we'd absolutely know about it by now.
I stick to peanut, soybean, or mostly extra light olive oil (or EVO for non-cooking needs).
I've always wondered what are those "issues" of genetically modified crops? If anything I would love for us to create a plant that is very low in the arctic acid they say it's bad.
The only valid argument I've heard against GMOs is that they could decrease species diversity in some crops (like corn, which in Mexico we have hundreds of varieties, and the introduction of GMO corn could out compete those local varieties)