Right, the whole point of bees as insect pollinators (reflecting that they are recent evolutionary line) is that they are by a healthy margin the most intelligent arthropod. They will inspect then successfully pollinate anything floral over a wide geographic range. Most insect pollinators are instinctually tied to certain species/families.

My magnolia is the only thing that seems to attract honeybees, which I rarely see otherwise. The article doesn't seem to justify the "not bees" part, though. I'd imagine bees can pollinate them too.