Abstract intelligence is still not demonstrated to be a facilitating survival trait (Clarke). It is most evidently a component of the mating ritual, no more, and given the historical behavior of humans, it looks to be more a detriment to the long-term survival of everyone than an actual net benefit (we are kind of destroying our global ecosystem). Greater intelligence (at the biological level) is a pretty complex thing that involves a lot of foresight, of which most of us seem a bit lacking. The arguments surrounding intelligence itself, particularly in this thread, are a bit wanting. I am not convinced that the idea can be distilled so easily.
Can we communicate with those Aldebarian critters? That seems to be the benchmark. But what if those Aldebarians maintain their intelligence primarily by grafting the parent’s brain into the child? What if the kind of communication they engage in has no real parallel to what we are accustomed to? We make a lot of baseline assumptions that simply may not be applicable outside our little garden.