Let me just say that I don't think this is any reason not to have/plant milkweed. I think these articles were more about the strange pollination process that has to occur in light of how the milkweed flowers are structured. Obviously tons of bees & butterflies are not losing their lives on milkweed otherwise the beekeeper would have said so & been very concerned and we would be hearing about that from beekeepers all over the place not to mention that it would be touted that monarch butterflies are being killed by their host plant. I think bees, butterflies and other pollinators may sometimes be hurt or die but I imagine if you observed long enough it you would find it's the more rare occurrence and not the norm. Stuff happens.
