Hey, I'm the author. I'm indeed writing from Hungary, Europe, and here dandelions are native, and they are one of the main sources of early food, especially for the bumblebee queens and the mining bees. My lawn is littered with dandelions and there is so much activity on them. The other main food source at this moment is plum blossoms, but those are a favorite of the honey bees and they often aggressively chase away the native bees. So most of the native bees are therefore forced to keep lower to the ground and make use of the dandelions, daisies and violets. I see all my neighbors pulling out the dandelions, and thereby removing the only really abundant food source the native bees have left. That's why I said to stop pulling up dandelions.