But the risk is actually more broad than the article points out. Any honey where enough of the nectar comes from rhododendrons could be dangerous.

Grayanotoxin containing Rhododendron occur not just in Nepal, but in Turkey, North America, and Europe.

I think there are other plants that the bees concentrate the toxins of.

The posted one also removes a link to the original author's Google scholar page.

And can actually be read, the other is so as-ridden that I just gave up (I know I should probably install some blocker in my phone, but I'm lazy).