I reread the above and realized that TACF isn’t as clear as they should/could be: they are supporting a newer strain, win3.12 [0], which, as alluded to above, expresses the OxO gene only when infected. This is metabolically less expensive. Thus there is no reason to spend effort looking for the Darling 58. I also gather from other sources that the TACF want to downplay that they are switching to this new strain, that this development of finding a bug in Darling 54 is a political salve[1] —- maybe they don’t want to offend somebody?

[0] https://pubmed.ncbi.nlm.nih.gov/34841616/

[1] https://ambrook.com/research/sustainability/GMO-chestnut-con...