I've no insight beyond the article, but short termism + a long problem horizon could explain it. Farmers with annual crops will notice a problem quickly. But t

I've no insight beyond the article, but short termism + a long problem horizon could explain it. Farmers with annual crops will notice a problem quickly. But these farmers all have thriving crops. It's just they don't have replacements. It would be interesting to see if a lot of these are newish farmers vs. multigenerational farms that actually had to develop a practice of fostering a new generation. It's also possible that new generations used to be automatic, whereas the stresses have arrived suddenly and are a novel threat. I think the basic problem is that if problems aren't hurting today then humans generally are bad at noticing and dealing with them, if the threat is long term and needs preventative action well in advance.