The comments you cited are no better or worse than “Man, this weather, am I right?” or “Did you see the sports people do sports last night?” Sometimes communication is less about insightful content and more about signaling solidarity and goodwill.

Also, there are only so many colors and so many simple shapes in the world. Eventually, after thousands and thousands of popular marks, a few are going to look more or less like each other. It's not important that you come up with something completely and totally unlike anything else while using the same colors and geometric principles as the rest of the world. What matters is that the mark you choose suits your brand, communicating the right posture.