Occum's Razor suggests that the simplest answer is, in most likelihood, the correct assumption. While it is true that further revelations may very occasionally clarify the actions of some decisions, rarely would that information change what we have witnessed.
But what of those assumptions? As each of us toils through our day, everyday, each individual thing we see or do is based upon assumptions.
Our own empirical dataset is inexorably flawed because we interpret our own experiences differently than others may have experienced them, falling again to assumption as we draw from ourselves in previous situations to react to new ones. We take things for granted every moment of our lives and live in a world of assuming the things we see and do will react as we expect them to. This is required to function. Our entire lives are made up of a series of natural deductions. Its how we've made it as far as we have.
Having assumptions is more about things you've experienced rather than new revelations unveiled, and its these situations where you're more likely to err. Those who refuse to 'make assumptions' have already failed insofar as they've just created a paradox by assuming they shouldn't. EVERYTHING is based upon what we, as individuals believe is true, and our reaction to them.
Bible versus are sometimes inaccurately interpreted as the Jesus reminding us to not judge others, when in fact he's demanding that we judge them with righteousness.
I don't know what went down, and I don't care. And in this case, my own experiences have taught me not to rely solely upon what others have told me as my basis for decision making. Fair enough. But don't tell me not to judge. I alone am responsible for the outcomes of my own actions.