I see your point, but I don't think either of those is (or should be) embarrassing. Higher-level aspects of intelligence, such as capacity for abstraction and analogy, creativity, etc., are far more important, and we have no known peers with respect to those capacities.

The truly embarrassing things to me are things like paying almost no attention to global existential risks, having billions of our fellow human beings live in poverty and die early from preventable causes, and our profound irrationality as shown in the heuristics and biases literature. Those are (i.e., should be) more embarrassing limitations, not only because they are more consequential but because we accept and sustain those things in a way that we don't with respect to WM size and limitations of that sort.