When bees collect pollen from flowers, on their travel back to the hive, they can frop pollen particles onto crops and speed up growth by more than 2x. AND their can do this up to 10x in one trip. This can be very useful and a lot more effcient than normal farms when made with the right design. Just like a portable bonemeal dispencer.

This can also be very useful for automatic villager farms. One problem with these farms are that crops don't grow if the player is more than 128 blocks away from the crops. This means that the villagers have nothing to collect and does NOT work. BUT, the bees still pollenate and make the crops grow. Which means the farms can still work, not as efficiently, but still work while on long journeys.

Hope this helped!