Early polls suggest Sanders having surprisingly great support don't count according to the numerous threads we had, but now that they indicate Clinton is on a streak it does? Make up your mind.
Who exactly are you talking to? Most that follow polling with any regular basis in Poligaf and in any real political conversations on the forum have always said to look at aggregates.
Regardless, that hasn't stopped every individual poll showing Sanders gaining some percentage, no matter how minuscule, being deemed worthy of having a thread created for it the past month or so. I don't see why anyone should complain when the shoe is on the other foot.