No, the devs have stated it is hyper intelligent and HUGE. The question only remains of its nature and motives for colonizing our world. Does it know we are here, and if so was/is it actively trying to exterminate us?
The fact that blob matter stays dormant in humans until we die seems to suggest that it hasn’t even taken notice of our existence, rather than if it was malicious. A disdainful lack of concern for our existence is also possible, but then why would it not just override all of us immediately? Its inside EVERYTHING, if it wanted us all dead, or mutated for its own purposes, we would be. Unless it has as much fine control over its cells as we have of ours.
Another possibility is that it is so alien that the nature of our existence is just as incomprehensible to it as it is to us, and does not understand that it just genocided the shit out of us. Alternatively, it may know we exist but not really see us as other minds, or have a radically different or incomprehensible moral structure.
One last possibility, though it seems unlikely given the bleak setting: It didn’t know we were here at first, but it figured it out after it was too late and the whole planet was contaminated. It has as much control over its individual cells as we do, and as a result its biology has run amok on our world. The whole thing was an accident, and it can’t do a damn thing to stop it, or the side effects of its actions (dimensional rifts, invasion by other extradimensional entities, etc).
