I have never planted any of those bulbils. Three years ago I allowed those stalks with bulbils to grow but ended up throwing away all those heads of bulbils. Last year, when the stalks began to grow, I simply cut them off, thinking that the plants would direct more energy into the bulb formation. I don't know whether that's true or not.
I have read that when planted, they will only grow larger (single clove) after one year but if left in the ground, will grow into a bulb the second year. I have neither the space nor perhaps the patience to keep them in the ground for two years.
It is bad enough to have all my garlic taking up the vast majority of the raised garden space from October till June.