People are riding the Postecoglou and good result high, and refusing to see things clearly as a result. People also generally take any criticism as insult to themselves or the team, which makes it even harder for them to see what you're getting at.
I agree, we are indeed quite shaky at the back still. So far we've had the good fortune of Romero, VDV, Vicario making excellent individual interventions, but there have also been so so many heart-in-mouth moments that on another day could go very differently.
Yes Brentford had a bullshit pen, but you can't write off a deflected, they happen if an opposition is allowed to attack and get shots off. Our two goals against United wouldn't count if we dismiss the Brentford goal.
We could have very well lost to Brentford, as they had at least one more golden chance they wasted. United had multiple great chances too, like when Fernandes missed an open header after completed catching our defence out.