Back in the 80's when KY was beginning to become a player in the weed market, I dont remember anyone ever having a problem with bud rot and now its kind of a given with outdoor growing. Why? Buds are a lot denser and stickier now than they were back then, so I wonder if breeders focus more on new strains for indoor growing or has the weather changed that much over the years. Making the environment a constant and eliminating bugs as a problem sure makes growing a lot easier to control.
BR has been around forever ! I think it's just the info is much easier to spread around these days; makin it seem more prevalent. But the main reason that you see more BR is N is being used at such high levels. That is a predisposal to many fungal problems. LUSH GROWTH equals BR probs.
The majority of bud rot I'm seeing is caused by moths. Chubbs makes a good point about the nitrogen but my theory is it's also the genetics are making weaker resistance compared to the old landrace varieties.
I agree I do think the change in genetics has something to do with it, and maybe climate change too if that's not fake news. On the other hand I think the climate is always changing and always has been changing