“Anyway, on the Roundup question... The plants with Roundup are DEAD. Bees don’t care about dead plants.”
The intestinal flora in the bees are plants (bacteria and yeast). Roundup kills plants and intestinal flora. You can’t live without intestinal flora. Kill off the bees’ intestinal flora and the bees die.
According to the article, some bees’ intestinal flora were more resistant to the herbicide than others.