Earlier quoted context omitted.
It's a "suggestion" from a direct superior in a hierarchical power structure. A little bit of communication isn't going to change the context. So no, it is not something simple like "bad communication". I think one of the main problems here is that people in power often feel like they have to justify themselves by giving technical feedback, even when it's not appropriate.
But there are ways of eliciting critical thought about the choices made and even about alternatives that the person in power has. It is "bad communication" in that the person in power is communicating their desire in a way that is perceived, even if just a little bit, as being a command. And I do believe there are effective ways to mitigate this.
Communication is not just about how you communicate, but when. Good communicators know how and when to listen, and they keep their mouth shut when it's appropriate. That's the lesson of this article. If that's not a problem for you—if you know when to speak and when to listen—then maybe this article won't help you, personally.
And if my manager was always trying to elicit critical thought about trivial and mundane matters like font choice and colors on internal tools, then I'd want them to just shut up for a moment. I'd be glad to hear what your effective mitigation strategies are for giving unnecessary advice.