Yes, why not? Covers usually convey a lot of information about a book. Of all the books whose covers look like those an action manga, how many do you figure are a good resource for learning Polish? (Yes, in a way I'm acting deliberately obtuse about the proverb you are referring to, but the point is that there is nothing to that rule apart from it being a popular proverb. It is not hard to find proverbs that assert falsehoods.)
I don't know if the hypothetical scenario in which this logo was generated according to formal DoD-wide rules inspires any more confidence, either. It would just cast more suspicion upon other inputs that go into DoD-branded claims - if standard procedure for insignia produces this, what does e.g. standard procedure for documenting the circumstances under which a video was taken do?